/*
================================================================================
INDEX.CSS - PORTFOLIO STYLES
================================================================================
This file contains all the custom CSS for the portfolio. 
Tailwind handles most of the layout and colors in index.html, but custom 
animations, glowing elements, and specific glassmorphism effects are kept here.
*/

/* Google Fonts import for Roboto and Orbitron */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;700;900&family=Roboto:wght@300;400;500;700;900&display=swap');

/* Font utility classes */
.font-orbitron {
    font-family: 'Orbitron', sans-serif;
}

/* 
--------------------------------------------------------------------------------
BLUR ORB — Atmospheric background glow blobs
Used by Education, Achievements, Contact sections for ambient depth.
--------------------------------------------------------------------------------
*/
.blur-orb {
  position: absolute;
  border-radius: 9999px;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

/* 
--------------------------------------------------------------------------------
1. KEYFRAME ANIMATIONS
--------------------------------------------------------------------------------
These dictate how the scrolling skills banners move infinitely across the screen. 
*/
/* Scrolls content LEFT — JS sets --scroll-amount to exactly one set's width */
@keyframes marquee {
    0%   { transform: translateX(0); }
    100% { transform: translateX(var(--scroll-amount, -50%)); }
}

/* Scrolls content RIGHT — JS sets --scroll-amount, animation-direction: reverse does the flip */
@keyframes marquee-reverse {
    0%   { transform: translateX(var(--scroll-amount, -50%)); }
    100% { transform: translateX(0); }
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(249, 115, 22, 0.2), inset 0 0 20px rgba(249, 115, 22, 0.2);
        border-color: rgba(249, 115, 22, 0.8);
    }
    50% {
        box-shadow: 0 0 60px rgba(249, 115, 22, 0.8), inset 0 0 60px rgba(249, 115, 22, 0.8);
        border-color: rgba(253, 186, 116, 1);
    }
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Galaxy orbital ring keyframes - all CSS-only for performance safety */
@keyframes galaxy-cw {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to   { transform: translate(-50%, -50%) rotate(360deg); }
}
@keyframes galaxy-ccw {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to   { transform: translate(-50%, -50%) rotate(-360deg); }
}
@keyframes galaxy-cw-tilt {
    from { transform: translate(-50%, -50%) rotateX(55deg) rotateZ(0deg); }
    to   { transform: translate(-50%, -50%) rotateX(55deg) rotateZ(360deg); }
}
@keyframes galaxy-ccw-tilt {
    from { transform: translate(-50%, -50%) rotateX(60deg) rotateZ(0deg); }
    to   { transform: translate(-50%, -50%) rotateX(60deg) rotateZ(-360deg); }
}
@keyframes galaxy-shimmer {
    0%, 100% { opacity: 0.6; }
    50%       { opacity: 1; }
}

/* Orbital ring base class */
.galaxy-ring {
    position: absolute;
    top: 50%; left: 50%;
    border-radius: 50%;
    pointer-events: none;
}

/* 
--------------------------------------------------------------------------------
2. CUSTOM CLASSES
--------------------------------------------------------------------------------
*/

/* Blinking cursor for typing animation */
.animate-blink {
    animation: blink 1s step-end infinite;
    color: #f97316; /* Orange to match the avatar ring */
    margin-left: 2px;
}

/* RGB gradient text animation */
@keyframes textRgb {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.animate-text-rgb {
    background: linear-gradient(to right, #ff0000, #ff7f00, #ffff00, #00ff00, #0000ff, #4b0082, #8b00ff, #ff0000);
    background-size: 200% auto;
    color: transparent;
    -webkit-background-clip: text;
    background-clip: text;
    animation: textRgb 3s linear infinite;
}

/* Glow animation for the orange avatar ring */
.animate-pulse-glow {
    animation: pulse-glow 3s infinite ease-in-out;
}

/* 
================================================================================
CIRCULAR ORBIT SYSTEM
================================================================================
The container is relative, the javascript builds orbit-nodes which are animated around the center.
*/

#orbit-stage {
    /* Perspective for slightly 3d feel */
    perspective: 1000px;
}

/* Base class for the orbiting element */
.orbit-node-single {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80px;
    height: 80px;
    margin-top: -40px;
    margin-left: -40px;
    /* Z-index below the image layer */
    z-index: 5;
    /* Hardware acceleration */
    will-change: transform, opacity;
}

.orbit-icon-img-single {
    width: 100%;
    height: 100%;
    object-fit: contain;
    position: absolute;
    top: 0; left: 0;
}


/*
 
--------------------------------------------------------------------------------
6. MARQUEE / ICON SCROLL TRACK
--------------------------------------------------------------------------------
Row 1 scrolls LEFT. Row 2 scrolls RIGHT.
The .marquee-inner holds ALL items (first half + duplicate second half)
and animates the whole block as one unit — no glitches, no half-circle effect.
NO hover-pause — animation runs continuously at all times.
*/

/* The transparent window for our icons */
.marquee-track {
    width: 100%;
    padding: 2.5rem 0; /* large vertical padding ensures the giant auras don't clip against parent bounding boxes */
    margin: -1.5rem 0; /* visually stagger the rows closer while preserving their aura bounds */
}

/* The moving inner belt containing all icon items */
.marquee-inner {
    display: flex;
    gap: 0;            /* Gap is applied per-item via margin-right so the 50% midpoint is exact */
    width: max-content;
}

/* Staggered continuous scroll speeds for a fluid cosmic drift effect */
.scroll-left-1 {
    animation: marquee 50s linear infinite;
}

.scroll-right-1 {
    animation: marquee-reverse 65s linear infinite;
}

.scroll-left-2 {
    animation: marquee 45s linear infinite;
}

.scroll-right-2 {
    animation: marquee-reverse 75s linear infinite;
}

/* Each individual icon pill with clear background and hover glow scaling */
.icon-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;        /* breathing room */
    background: transparent;     /* removed white background */
    flex-shrink: 0;
    white-space: nowrap;
    /* Use margin-right instead of gap so the 50% translate always meets perfectly */
    margin-right: 8rem;          /* increased spacing for glowing icons */
    transition: transform 0.3s ease;
}

.icon-item:hover {
    transform: translateY(-5px) scale(1.15);
}

@keyframes subtle-float {
    0% { transform: translateY(-4px) scale(var(--icon-scale, 1)); }
    100% { transform: translateY(4px) scale(var(--icon-scale, 1)); }
}

/* Increased icon size */
.icon-item img {
    height: 4.5rem;
    width: auto;
    max-width: 4.5rem;   /* Ensure square-ish bounding box */
    object-fit: contain;
    display: block;
    margin: 0 1rem;      /* Extra outer spacing for glow effects to not bleed */
    opacity: var(--icon-opacity, 1);
    transform: scale(var(--icon-scale, 1));
}

/* Forward scrolling animation for the skills row */
.animate-marquee {
    display: flex;
    width: max-content;
    animation: marquee 40s linear infinite;
}

/* Backward scrolling animation for the skills row */
.animate-marquee-reverse {
    display: flex;
    width: max-content;
    animation: marquee-reverse 40s linear infinite;
}

/* 
--------------------------------------------------------------------------------
7. 3D WORKSTATION ANIMATION
--------------------------------------------------------------------------------
*/
@keyframes pc-float {
    0%, 100% {
        transform: translateY(0) rotateY(0deg);
    }
    50% {
        transform: translateY(-20px) rotateY(-2deg);
    }
}

.animate-pc-float {
    animation: pc-float 8s ease-in-out infinite;
    /* transition for smooth mouse parallax applied via JS */
    transition: transform 0.2s ease-out;
}

/* General Body styling to ensure proper fonts and prevent horizontal scrolling */
body {
    font-family: 'Roboto', sans-serif;
    background-color: #02040a;
    position: relative;
    overflow-x: hidden;
}

/* Headings use Roboto bold for a clean, professional look */
h1, h2 {
    font-family: 'Roboto', sans-serif;
}

/* h3 and smaller headings */
h3, .font-display {
    font-family: 'Roboto', sans-serif;
}

/* All paragraph text */
p {
    font-family: 'Roboto', sans-serif;
}

/* Creates the fading edges on the left and right sides of the scrolling skills banner */
.mask-fade {
    /* Edit the percentages (15% and 85%) to change how wide the fade gradient is */
    mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
}

/* 
--------------------------------------------------------------------------------
3. BACKGROUND & GLOW EFFECTS
--------------------------------------------------------------------------------
*/

/* The outer container holding the nebula glow and stars behind everything */
.nebula-container {
    position: fixed;
    inset: 0;
    z-index: -10;
    /* Adjust the RGBA values to change the color of the background glows */
    background: radial-gradient(circle at 20% 30%, rgba(30, 58, 138, 0.18) 0%, transparent 45%),
                radial-gradient(circle at 80% 70%, rgba(67, 56, 202, 0.12) 0%, transparent 55%),
                radial-gradient(circle at 50% 50%, rgba(8, 145, 178, 0.08) 0%, transparent 65%);
    background-color: #02040a;
}

/* The complex dot-matrix starfield background */
.stars {
    position: absolute;
    width: 100%;
    height: 100%;
    /* Edit the colors, sizes (1px etc), and opacity to change the look of the stars */
    background-image: 
        radial-gradient(1px 1px at 10% 10%, white, transparent),
        radial-gradient(1.5px 1.5px at 20% 35%, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.6), transparent),
        radial-gradient(2px 2px at 45% 15%, rgba(255,255,255,0.7), transparent),
        radial-gradient(1px 1px at 60% 80%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1.5px 1.5px at 75% 25%, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 85% 55%, rgba(255,255,255,0.4), transparent),
        radial-gradient(2px 2px at 95% 90%, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 5% 95%, rgba(255,255,255,0.7), transparent),
        radial-gradient(1.5px 1.5px at 50% 5%, rgba(255,255,255,0.5), transparent);
    
    background-size: 1000px 1000px;
    opacity: 0.25; 
}

/* Massive blurry blobs of color placed behind specific elements for atmosphere */
.blur-orb {
    position: absolute;
    border-radius: 50%;
    /* Edit this value to make the orb more solid (e.g. 50px) or more blurry (e.g. 150px) */
    filter: blur(100px);
    z-index: -1;
    opacity: 0.3;
}

/* 
--------------------------------------------------------------------------------
4. GLASSMORPHISM CARDS
--------------------------------------------------------------------------------
These styles are applied automatically to the Project and Research cards.
*/
.glass-card {
    /* 15% opacity dark blue base */
    background: rgba(15, 23, 42, 0.15);
    /* The core blurring effect that makes it look like frosted glass */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 200, 255, 0.2);
    box-shadow: 0 0 15px rgba(0, 200, 255, 0.1);
}

/* Changes that occur when you hover over a card */
.glass-card:hover {
    /* Becomes slightly less transparent */
    background: rgba(15, 23, 42, 0.25);
    /* Border changes to a subtle primary blue/cyan color */
    border: 1px solid rgba(6, 182, 212, 0.2);
    /* Slides the card upwards by 4 pixels */
    transform: translateY(-4px);
}

.about-card {
    --theme-rgb: 0, 200, 255; /* Default cyan fallback */
    position: relative;
    padding: 32px;
    border-radius: 24px;
    background: radial-gradient(circle at 20% 20%, rgba(var(--theme-rgb), 0.08), transparent 60%), rgba(10, 20, 40, 0.45);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(0, 200, 255, 0.2);
    transition: all 0.3s ease;
    box-shadow: 
        0 15px 35px rgba(0,0,0,0.6),
        0 0 15px rgba(var(--theme-rgb), 0.05); /* Lowered base glow */
}

/* Moving light reflection feeling on the glass border */
.about-card::before, .edu-card::before, .achieve-card::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: 24px;
    background: linear-gradient(120deg, transparent, rgba(var(--theme-rgb), 0.25), transparent);
    opacity: 0;
    transition: opacity 0.35s ease;
    pointer-events: none;
    z-index: 0;
}

/* Activate hover glow */
.about-card:hover::before, .edu-card:hover::before, .achieve-card:hover::before {
    opacity: 1;
}

/* Floating Depth on Hover */
.about-card:hover {
    transform: translateY(-4px); /* Much gentler hover */
    box-shadow: 0 10px 20px rgba(0,0,0,0.4), 0 0 40px rgba(var(--theme-rgb), 0.1); /* Dramatically reduced hover glow */
}

/* Optional: Subtle Icon Glow */
.about-card svg, .about-card .material-symbols-outlined {
    filter: drop-shadow(0 0 6px rgba(var(--theme-rgb), 0.6));
}

/* 
--------------------------------------------------------------------------------
RGB ROTATING BORDER EFFECT (For all cards)
--------------------------------------------------------------------------------
*/
@property --bg-angle {
    syntax: '<angle>';
    inherits: false;
    initial-value: 0deg;
}

@keyframes spin-rgb-border {
    0% { --bg-angle: 0deg; }
    100% { --bg-angle: 360deg; }
}

.about-card::after, .glass-card::after {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1.5px;
    background: conic-gradient(
        from var(--bg-angle), 
        #ff0000, #ffff00, #00ff00, #00ffff, #0000ff, #ff00ff, #ff0000
    );
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    z-index: -1;
    pointer-events: none;
    opacity: 0.45; /* +10% border visibility */
    animation: spin-rgb-border 4s linear infinite;
}

.about-card:hover::after, .glass-card:hover::after {
    opacity: 0.7;
    animation: spin-rgb-border 2.5s linear infinite;
}

/* 
--------------------------------------------------------------------------------
EDUCATION CARD GLOWING BORDER EFFECT (Navy Blue)
--------------------------------------------------------------------------------
*/
.edu-card::after {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1.5px;
    background: conic-gradient(
        from var(--bg-angle), 
        rgba(30, 58, 138, 0.1), /* Dim Navy */
        rgba(30, 64, 175, 0.9), /* Solid Navy */
        rgba(17, 24, 39, 0.6),  /* Dark */
        rgba(30, 64, 175, 0.9), /* Solid Navy */
        rgba(30, 58, 138, 0.1)  /* Dim Navy */
    );
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    z-index: -1;
    pointer-events: none;
    opacity: 0.9; /* +10% border visibility */
    animation: spin-rgb-border 4s linear infinite;
}

.edu-card:hover::after {
    opacity: 1;
    animation: spin-rgb-border 2.5s linear infinite;
}

/* 
--------------------------------------------------------------------------------
ACHIEVEMENT CARD GLOWING BORDER EFFECT (Dim Purple)
--------------------------------------------------------------------------------
*/
.achieve-card::after {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1.5px;
    background: conic-gradient(
        from var(--bg-angle), 
        rgba(124, 58, 237, 0.05), /* Very Dim Purple */
        rgba(124, 58, 237, 0.5),  /* Dim Purple */
        rgba(76, 29, 149, 0.3),   /* Deep Dark Purple */
        rgba(124, 58, 237, 0.5),  /* Dim Purple */
        rgba(124, 58, 237, 0.05)  /* Very Dim Purple */
    );
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    z-index: -1;
    pointer-events: none;
    opacity: 0.6;
    animation: spin-rgb-border 5s linear infinite; /* Slightly slower */
}

.achieve-card:hover::after {
    opacity: 0.85;
    animation: spin-rgb-border 3s linear infinite;
}

/* 
--------------------------------------------------------------------------------
SKILL CARD GLOWING BORDER EFFECT (Elite Cyan)
--------------------------------------------------------------------------------
*/
.skill-card {
    position: relative;
    /* Ensure z-index allows border behind content */
    z-index: 1;
}

.skill-card::after {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1.5px;
    background: conic-gradient(
        from var(--bg-angle), 
        rgba(6, 182, 212, 0.1), /* Faded Cyan */
        rgba(6, 182, 212, 0.8), /* Vibrant Cyan */
        rgba(10, 20, 60, 0.5),  /* Deep Blue */
        rgba(6, 182, 212, 0.8), /* Vibrant Cyan */
        rgba(6, 182, 212, 0.1)  /* Faded Cyan */
    );
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    z-index: -1;
    pointer-events: none;
    opacity: 0.6;
    animation: spin-rgb-border 4s linear infinite;
}

.skill-card:hover::after {
    opacity: 1;
    animation: spin-rgb-border 2s linear infinite;
}

/* 
--------------------------------------------------------------------------------
GRID NETWORK CONNECTORS (Gap spanning animations)
--------------------------------------------------------------------------------
*/
.path-line-y {
    position: absolute;
    width: 3px;
    height: 1.5rem; /* Matches gap-6 (24px) precisely */
    background: rgba(var(--theme-rgb), 0.25);
    z-index: 10;
    overflow: hidden;
    border-radius: 3px;
}
.path-line-x {
    position: absolute;
    height: 3px;
    width: 1.5rem; /* Matches gap-6 (24px) precisely */
    background: rgba(var(--theme-rgb), 0.25);
    z-index: 10;
    overflow: hidden;
    border-radius: 3px;
}

.path-dot-y {
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 30%;
    background: linear-gradient(to bottom, transparent, rgba(var(--theme-rgb), 0.8), #fff);
    filter: drop-shadow(0 0 12px rgb(var(--theme-rgb))) drop-shadow(0 0 4px #fff);
    animation: flow-y 3s infinite linear;
    border-radius: 4px;
}
.path-dot-x {
    position: absolute;
    left: -100%;
    top: 0;
    height: 100%;
    width: 30%;
    background: linear-gradient(to right, transparent, rgba(var(--theme-rgb), 0.8), #fff);
    filter: drop-shadow(0 0 12px rgb(var(--theme-rgb))) drop-shadow(0 0 4px #fff);
    animation: flow-x 3s infinite linear;
    border-radius: 4px;
}

@keyframes flow-y {
    0% { transform: translateY(0); opacity: 0; }
    15% { opacity: 1; }
    85% { opacity: 1; }
    100% { transform: translateY(200%); opacity: 0; }
}
@keyframes flow-x {
    0% { transform: translateX(0); opacity: 0; }
    15% { opacity: 1; }
    85% { opacity: 1; }
    100% { transform: translateX(200%); opacity: 0; }
}

/* Specific connector absolute positioning relative to their parent cards */
.connect-foundation-systems {
    bottom: -1.5rem;
    left: 4.5rem; /* Drops down from left side of Foundation */
}
.connect-foundation-algorithms {
    right: -1.5rem;
    top: 50%;
    transform: translateY(-50%); /* Crosses right to Algorithms */
}
.connect-algorithms-ecosystems {
    bottom: -1.5rem;
    left: 4.5rem; /* Drops down to Tech Ecosystems */
}
.connect-systems-ecosystems {
    right: -1.5rem;
    top: 50%;
    transform: translateY(-50%); /* Crosses right from Systems */
}
.connect-systems-research {
    bottom: -1.5rem;
    left: 4.5rem; /* Drops down from Systems to Research */
}
.connect-ecosystems-research {
    bottom: -1.5rem;
    right: 4.5rem; /* Drops down from right side of Tech Ecosystems */
}
.connect-research-vision {
    bottom: -1.5rem;
    left: 50%; /* Drops down from Research to Vision directly in middle */
    transform: translateX(-50%);
}

/* 
--------------------------------------------------------------------------------
SIDEBAR DIVIDERS
--------------------------------------------------------------------------------
*/
.highlights-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 200, 255, 0.4), transparent);
    margin: 18px 0;
}

/* 
--------------------------------------------------------------------------------
5. NAVIGATION LINKS
--------------------------------------------------------------------------------
These styles handle the RGB underline and upward pop effect when hovering
over the top navigation bar links.
*/
.nav-link {
    position: relative;
    font-size: 0.875rem; /* text-sm equivalent */
    font-weight: 500;
    color: #94a3b8; /* text-slate-400 */
    transition: all 0.3s ease;
    padding-bottom: 0.25rem;
    display: inline-block;
}

.nav-link:hover {
    color: white;
    /* Pushes the text up slightly */
    transform: translateY(-3px);
}

/* The hidden RGB underline */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    /* RGB Gradient */
    background: linear-gradient(90deg, #ff0000, #00ff00, #0000ff, #ff0000);
    background-size: 200% 100%;
    /* Initially hidden by scaling it to 0 */
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
    border-radius: 2px;
}

/* When hovering on the link, make the border appear and animate */
.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
    animation: rgbSlide 2s linear infinite;
}

/* Keyframes to smoothly move the RGB gradient across the underline */
@keyframes rgbSlide {
    0% { background-position: 100% 0; }
    100% { background-position: -100% 0; }
}

/* 
--------------------------------------------------------------------------------
FADE UP ANIMATION ON SCROLL
--------------------------------------------------------------------------------
*/
.fade-up {
    opacity: 0;
}

.fade-up.show {
    animation: fadeUpAnim 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeUpAnim {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 
--------------------------------------------------------------------------------
SKILLS SECTION ENHANCEMENTS
--------------------------------------------------------------------------------
*/
.skills-section {
    padding-bottom: 80px;
}

.title-glow {
    text-shadow: 0 0 30px rgba(0, 200, 255, 0.8), 0 0 60px rgba(0, 200, 255, 0.4); /* Stronger glow to pop more */
}

.skill-advanced {
    opacity: 1;
}

.skill-intermediate {
    opacity: 0.8;
}

.skill-beginner {
    opacity: 0.5;
}

/* 
--------------------------------------------------------------------------------
SKILLS GRID — HOVER LIFT & BLUR SIBLINGS
When any card is hovered, siblings dim + blur; the hovered card lifts forward.
--------------------------------------------------------------------------------
*/

/* Base: all cards are positioned so z-index stacking works */
.skills-row .skill-card {
    position: relative;
    transition:
        opacity        0.3s ease,
        filter         0.3s ease,
        transform      0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow     0.35s ease;
    will-change: transform, box-shadow;
}

/* All Cards: dim + blur when a card in the *section* is hovered */
.skills-section:has(.skill-card:hover) .skill-card:not(:hover) {
    opacity: 0.4;
    filter: blur(2px) saturate(0.5);
    transform: scale(0.97);
}

/* The hovered card — rises off the screen */
.skills-row .skill-card:hover {
    transform: translateY(-28px) scale(1.03);
    z-index: 30;
    box-shadow:
        0 2px 4px   rgba(0, 0, 0, 0.4),    /* paper shadow */
        0 12px 24px rgba(0, 0, 0, 0.5),    /* mid lift */
        0 28px 52px rgba(0, 0, 0, 0.4),    /* deep cast shadow */
        0 48px 72px rgba(0, 0, 0, 0.25),   /* far ambient */
        0 0  50px   rgba(6, 182, 212, 0.12); /* cyan accent glow */
}


/* ──────────────────────────────────────────────────────────── */
/* HERO MICRO-INTERACTIONS & ANIMATIONS */
/* ──────────────────────────────────────────────────────────── */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* 
================================================================================
CONTACT ME SECTION CARDS
================================================================================
*/
/* 
================================================================================
EDUCATION SECTION CARDS
================================================================================
*/
.education-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 768px) {
  .education-grid {
    grid-template-columns: 1fr;
  }
}

.edu-card {
  --theme-rgb: 0, 224, 255;
  background: rgba(11, 16, 33, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 20px;
  border: 1px solid rgba(0, 200, 255, 0.15);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.3), 0 0 15px rgba(var(--theme-rgb), 0.05); /* Lowered base glow */
  padding: 24px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.edu-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.4), 0 0 40px rgba(var(--theme-rgb), 0.1); /* Dramatically reduced hover glow */
}

.edu-card.featured {
  transform: scale(1.06);
  border: 1px solid rgba(0, 200, 255, 0.35);
  box-shadow: 0 0 35px rgba(0, 200, 255, 0.18), 0 0 15px rgba(var(--theme-rgb), 0.05); /* Lowered base glow */
}

.edu-card.featured:hover {
  transform: translateY(-4px) scale(1.02); /* Adjusted to preserve pop effect, but much gentler */
  box-shadow: 0 10px 20px rgba(0,0,0,0.4), 0 0 40px rgba(var(--theme-rgb), 0.1); /* Dramatically reduced hover glow */
}

.edu-card img {
  width: 65px;
  margin-bottom: 12px;
  filter: brightness(1.3) contrast(1.1);
  opacity: 0.95;
}

.edu-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.edu-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  color: #ffffff;
}

.edu-subtext {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 16px;
}

.edu-label {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.edu-value {
  font-size: 14px;
  color: #ffffff;
}

.edu-score {
  display: inline-block;
  margin-top: 4px;
  font-size: 18px;
  font-weight: 600;
  color: #00e0ff;
}

.edu-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: 12px 0;
  width: 100%;
}

.edu-progress-bar {
  height: 6px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  margin-top: 8px;
  width: 100%;
}

.edu-progress-fill {
  height: 100%;
  width: 0;
  background: var(--fill-color, linear-gradient(90deg, #00e0ff, #00ffa3));
  animation: fillSemBar 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: var(--delay, 0s);
}

.edu-section-title {
  font-size: 36px;
  font-weight: 700;
  text-shadow: 0 0 20px rgba(0, 200, 255, 0.25);
  color: #ffffff;
  margin-bottom: 8px;
}

.edu-subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 32px;
}

/* 
================================================================================
SCORE VISUALIZATIONS
================================================================================
*/
.donut-ring {
  animation: drawDonut 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.5s;
}

@keyframes drawDonut {
  from { stroke-dasharray: 0, 100; }
  to { stroke-dasharray: var(--target), 100; }
}

.gauge-ring {
  animation: drawGauge 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.6s;
}

@keyframes drawGauge {
  from { stroke-dasharray: 0, 100; }
  to { stroke-dasharray: var(--target), 100; }
}

.sem-fill-bg {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--fill-color);
  width: 0;
  z-index: 0;
  border-radius: 8px;
  animation: fillSemBar 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: var(--delay, 0.5s);
  opacity: 0.8;
}

@keyframes fillSemBar {
  to { width: var(--target-width); }
}

/* 
================================================================================
B.TECH CARD SPECIFIC STYLES
================================================================================
*/

.cgpa-overall {
  font-size: 32px;
  font-weight: 700;
  color: #00e0ff;
  margin: 16px 0 24px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
}

.cgpa-overall span {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 600;
  letter-spacing: 1px;
}

.section-mini-title {
  width: 100%;
  text-align: left;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 6px;
}

.sem-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  margin-bottom: 8px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.sem-row:hover {
  background: rgba(255, 255, 255, 0.05);
}

.sem-row.latest {
  background: rgba(0, 224, 255, 0.05);
  border: 1px solid rgba(0, 224, 255, 0.15);
}

.sem-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 10;
}

.sem-score {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  position: relative;
  z-index: 10;
}

.sem-row.latest .sem-score {
  color: #00e0ff;
  font-weight: 700;
}

.sem-current-tag {
  background: rgba(0, 224, 255, 0.15);
  color: #00e0ff;
  font-size: 9px;
  padding: 3px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 0.5px;
  position: relative;
  z-index: 10;
}

/* 
================================================================================
ACHIEVEMENTS SECTION CARDS
================================================================================
*/
.achieve-card {
  --theme-rgb: 139, 92, 246;
  background: rgba(10, 15, 30, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 18px;
  border: 1px solid rgba(139, 92, 246, 0.15);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.1);
  padding: 24px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  z-index: 1;
}

.achieve-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.4);
  box-shadow: 0 10px 20px rgba(0,0,0,0.4), 0 0 40px rgba(var(--theme-rgb), 0.1);
}

.achieve-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  box-shadow: 0 0 15px rgba(139, 92, 246, 0.1);
  transition: all 0.4s ease;
}

.achieve-card:hover .achieve-icon-wrapper {
  background: rgba(139, 92, 246, 0.2);
  box-shadow: 0 0 25px rgba(139, 92, 246, 0.3);
  transform: scale(1.1);
}

.achieve-icon-wrapper svg {
  width: 28px;
  height: 28px;
  color: #a78bfa;
  filter: brightness(1.3) contrast(1.1) drop-shadow(0 0 8px rgba(167, 139, 250, 0.5));
}

.achieve-title {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.achieve-divider {
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: 16px 0;
}

.achieve-list {
  list-style: none;
  padding: 0;
  margin: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  text-align: left;
  gap: 12px;
}

.achieve-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.achieve-list li .bullet {
  color: #a78bfa;
  margin-top: 4px;
  flex-shrink: 0;
}

.achieve-list li span {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.6;
  transition: color 0.3s ease;
}

.achieve-card:hover .achieve-list li span {
  color: rgba(255, 255, 255, 0.9);
}


/* 
================================================================================
CONTACT ME SECTION CARDS
================================================================================
*/
.contact-card {
    position: relative;
    border-radius: 20px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1;
}

/* Spinning RGB border that reveals on hover for all cards */
.contact-card::after {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1.5px;
    background: conic-gradient(
        from var(--bg-angle, 0deg),
        rgba(6, 182, 212, 0.1), 
        rgba(6, 182, 212, 0.8), 
        rgba(10, 20, 60, 0.5),  
        rgba(6, 182, 212, 0.8), 
        rgba(6, 182, 212, 0.1)
    );
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    z-index: -1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
    animation: spin-rgb-border 4s linear infinite;
}

.contact-card:hover {
    transform: translateY(-5px) scale(1.02);
}
.contact-card:hover::after {
    opacity: 1;
}

/* SMALLER GRID CARDS */
.simple-card {
    padding: 24px 16px;
    background: rgba(15, 23, 42, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}
.simple-card:hover {
    background: rgba(15, 23, 42, 0.5);
    border-color: rgba(6, 182, 212, 0.3);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), 0 0 20px rgba(6, 182, 212, 0.15);
}

.simple-card svg {
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), color 0.3s ease, filter 0.3s ease;
    filter: drop-shadow(0 0 0px transparent);
}
.simple-card:hover svg {
    transform: scale(1.15);
    filter: drop-shadow(0 0 10px currentColor);
}

/* HIGHLIGHTED EMAIL CARD (Left Side) */
.highlight-card {
    background: radial-gradient(circle at top right, rgba(6, 182, 212, 0.08), transparent 60%), rgba(10, 15, 30, 0.4);
    border: 1px solid rgba(6, 182, 212, 0.15);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

/* Highlight card starts with some border opacity by default */
.highlight-card::after {
    opacity: 0.4;
}

.highlight-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0,0,0,0.6), 0 0 35px rgba(6, 182, 212, 0.2);
}
.highlight-card:hover::after {
    opacity: 0.9;
    animation: spin-rgb-border 2s linear infinite;
}

/* 
================================================================================
SITE FOOTER — PREMIUM GLASSMORPHISM
================================================================================
A structured three-column closing section: identity · navigation · mantra.
*/

.site-footer {
  width: 100%;
  padding: 60px 80px 50px;
  background: linear-gradient(
    to bottom,
    rgba(10, 15, 30, 0.4),
    rgba(10, 15, 30, 0.95)
  );
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 0;
  position: relative;
}

/* Cyan crown glow line above footer content */
.site-footer::before {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0, 224, 255, 0.3),
    transparent
  );
  margin-bottom: 30px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

/* Three-column grid */
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}

/* LEFT: Identity */
.footer-identity {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
}

.footer-profile-img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 10px rgba(0, 224, 255, 0.12);
  opacity: 0.95;
  filter: brightness(1.1) contrast(1.05);
  margin-top: 2px;
  transition: all 0.25s ease;
}

.footer-profile-img:hover {
  transform: scale(1.04);
  box-shadow: 0 0 14px rgba(0, 224, 255, 0.2);
}

.footer-name {
  font-family: 'Roboto', sans-serif;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #ffffff;
  line-height: 1;
}

/* Cyan accent on last name */
.footer-name .accent {
  color: #00e0ff;
}

.footer-tagline {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.6;
  font-weight: 400;
  letter-spacing: 0.01em;
  font-style: italic;
  margin: 0;
}

/* CENTER: Navigation */
.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}

.footer-nav-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(0, 224, 255, 0.5);
  margin-bottom: 10px;
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
}

.footer-nav ul li a {
  display: inline-block;
  font-size: 13.5px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  letter-spacing: 0.03em;
  padding: 3px 0;
  transition: all 0.25s ease;
}

.footer-nav ul li a:hover {
  color: #00e0ff;
  transform: translateX(4px);
  text-shadow: 0 0 12px rgba(0, 224, 255, 0.35);
}

/* RIGHT: Presence */
.footer-presence {
  display: flex;
  justify-content: flex-end;
}

.footer-mantra {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.42);
  line-height: 1.65;
  text-align: right;
  letter-spacing: 0.02em;
  font-weight: 400;
  font-style: italic;
}

/* Bottom strip */
.footer-bottom {
  text-align: center;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.5px;
  font-family: 'Roboto', sans-serif;
  font-weight: 400;
}

.footer-bottom .accent {
  color: #00e0ff;
}

/* Responsive: stack vertically on mobile */
@media (max-width: 768px) {
  .site-footer {
    padding: 48px 24px 36px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .footer-identity {
    align-items: center;
  }

  .footer-nav {
    align-items: center;
  }

  .footer-presence {
    justify-content: center;
  }

  .footer-mantra {
    text-align: center;
  }

  .footer-nav ul li a:hover {
    transform: none;
  }
}

/* 
================================================================================
B.TECH CARD — SEMESTER DASHBOARD STYLES
================================================================================
*/

/* Overall CGPA headline */
.cgpa-overall {
  font-size: 22px;
  font-weight: 700;
  color: #00e0ff;
  margin-top: 12px;
  margin-bottom: 4px;
  letter-spacing: 0.01em;
  line-height: 1;
}

.cgpa-overall span {
  font-size: 13px;
  font-weight: 500;
  color: rgba(0, 224, 255, 0.6);
  margin-left: 3px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* "Performance Trend" mini label */
.section-mini-title {
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
  margin-top: 12px;
  margin-bottom: 6px;
}

/* Semester rows */
.sem-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  transition: background 0.2s ease;
}

.sem-row:hover {
  background: rgba(255, 255, 255, 0.03);
}

.sem-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
  display: flex;
  align-items: center;
  gap: 6px;
}

.sem-score {
  font-size: 14px;
  font-weight: 500;
  color: #00e0ff;
  letter-spacing: 0.02em;
}

/* Latest semester — highlighted, no bottom border */
.sem-row.latest {
  border-bottom: none;
}

.sem-row.latest .sem-score {
  font-size: 16px;
  font-weight: 700;
}

/* "Latest" pill tag inline with Sem 3 label */
.sem-current-tag {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(0, 224, 255, 0.7);
  background: rgba(0, 224, 255, 0.08);
  border: 1px solid rgba(0, 224, 255, 0.2);
  border-radius: 4px;
  padding: 1px 5px;
}

/* 
================================================================================
SUBTLE SUPPORT FEATURE (Buy Me a Coffee)
================================================================================
*/

/* 1. Footer Link */
.bmc-footer-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #64748b; /* slate-500 */
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  text-decoration: none;
  transition: all 0.3s ease;
  padding: 4px 8px;
  border-radius: 6px;
}

.bmc-footer-link:hover {
  color: #fbbf24; /* amber-400 */
  background: rgba(251, 191, 36, 0.05);
}

.bmc-footer-link .bmc-icon {
  font-size: 14px;
  opacity: 0.8;
  transition: transform 0.3s ease;
}

.bmc-footer-link:hover .bmc-icon {
  transform: translateY(-2px) rotate(5deg);
  opacity: 1;
}

/* 2. Blog Post End-of-Article Block */
.bmc-article-block {
  margin: 3rem 0;
  padding: 1.5rem;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.4); /* subtle slate background */
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.bmc-article-text {
  font-size: 0.95rem;
  color: #94a3b8; /* slate-400 */
  line-height: 1.6;
}

.bmc-article-text strong {
  color: #cbd5e1;
  font-weight: 500;
}

/* 3. Main Blog Page Block (After Get in Touch) */
.bmc-blog-block {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.bmc-blog-block:hover {
  opacity: 1;
}

.bmc-blog-text {
  font-size: 0.9rem;
  color: #64748b; /* slate-500 */
}

/* Shared Subtle Button */
.bmc-btn-subtle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.2);
  color: #fbbf24; /* amber-400 */
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
}

.bmc-btn-subtle:hover {
  background: rgba(251, 191, 36, 0.15);
  border-color: rgba(251, 191, 36, 0.4);
  color: #fcd34d; /* amber-300 */
  transform: translateY(-1px);
}