@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;700;900&family=JetBrains+Mono:wght@400;700&display=swap');

/* =========================================
   TABLE OF CONTENTS
   1.  COLOR PALETTES & THEME CONFIG
   2.  SEMANTIC UTILITY CLASSES
   3.  RESET & BASE STYLES
   4.  PRELOADER & NAV INIT
   5.  NAVBAR
   6.  MOBILE MENU
   7.  INTERACTIVE GLOW
   8.  SKILLS SECTION
   9.  NEO BORDER & CARDS
   10. VISUAL EFFECTS (Glow, Pulse, Buttons)
   11. PROJECT CARDS
   12. SOCIAL ICONS (Ripple + Tooltip)
   13. CONTACT FORM (Floating Labels)
   14. SUBMIT BUTTON (Shine + Underline)
   15. SCROLLBAR
   16. CLICK SPARK
   17. MEDIA QUERIES
   ========================================= */


/* =========================================
   1. COLOR PALETTES & THEME CONFIG
   ========================================= */

/* DEFAULT — Dark Theme (Neon Green & Deep Black) */
:root {
    --bg-main:       #000000;
    --bg-card:       #020E0E;
    --bg-card-dark:  #000000;
    --text-main:     #ffffff;
    --text-muted:    #bec1c7;
    --accent:        #01DE82;
    --accent-glow:   rgba(1, 222, 130, 0.12);
    --border-color:  rgba(1, 222, 130, 0.1);
    --gradient-start: #000000;
    --gradient-end:   #020E0E;
}

/* LIGHT MODE — Clean Professional Theme */
[data-theme="light"] {
    --bg-main:       #c3f8eb;
    --bg-card:       #8fead6;
    --bg-card-dark:  #b8f5e6;
    --text-main:     #000000;
    --text-muted:    #434d5e;
    --accent:        #1d9478;
    --accent-glow:   rgba(40, 114, 161, 0.15);
    --border-color:  rgba(40, 114, 161, 0.2);
    --gradient-start: #ffffff;
    --gradient-end:   #F0F7FA;
}


/* =========================================
   2. SEMANTIC UTILITY CLASSES
   ========================================= */

.bg-theme-main        { background-color: var(--bg-main); }
.bg-theme-card        { background-color: var(--bg-card); }
.bg-theme-card-darker { background-color: var(--bg-card-dark); }

.text-theme-main      { color: var(--text-main); }
.text-theme-muted     { color: var(--text-muted); }
.text-theme-accent    { color: var(--accent); }

.border-theme-border  { border-color: var(--border-color); }
.border-theme-accent  { border-color: var(--accent); }

.gradient-theme {
    background: linear-gradient(180deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
}

/* Theme toggle icon visibility */
.light-icon { display: none; }
.dark-icon  { display: block; }

[data-theme="light"] .light-icon { display: block; }
[data-theme="light"] .dark-icon  { display: none; }


/* =========================================
   3. RESET & BASE STYLES
   ========================================= */

body {
    overflow-x: hidden;
    margin: 0;
}

body.loading {
    overflow: hidden;
}

.aspect-16\/9 {
    aspect-ratio: 16 / 9;
}

@supports not (aspect-ratio: 16 / 9) {
    .aspect-16\/9 {
        height: 0;
        padding-bottom: 56.25%;
        position: relative;
    }
}

/* Performance hints */
.glow-image,
.neo-border,
.btn-neo {
    will-change: transform;
    backface-visibility: hidden;
}


/* =========================================
   4. PRELOADER & NAV INIT
   ========================================= */

#main-nav {
    opacity: 0;
    visibility: hidden;
    transition: none !important;
}

#loader {
    transition: clip-path 1s cubic-bezier(0.77, 0, 0.175, 1);
}

#loader.hide {
    clip-path: inset(0 0 100% 0);
    pointer-events: none;
}


/* =========================================
   5. NAVBAR
   ========================================= */

.nav-link {
    position: relative;
    color: var(--text-main);
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--accent);
    text-shadow: 0 0 6px var(--accent-glow);
}

.nav-link:hover::after {
    width: 100%;
}

.no-underline::after {
    display: none;
}

/* ── RESUME BUTTON ─────────────────────────────────── */

.resume-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 20px;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-decoration: none;
  overflow: hidden;
  transition: color 0.3s ease, border-color 0.3s ease;
  cursor: pointer;
}

/* Fill layer that slides up on hover */
.resume-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
}

/* Arrow icon + text sit above the fill */
.resume-btn span,
.resume-btn svg {
  position: relative;
  z-index: 1;
  transition: transform 0.3s ease;
}

/* Hover: fill slides up, text turns white/black */
.resume-btn:hover::before {
  transform: translateY(0);
}

.resume-btn:hover {
  color: #fff;
}

/* Arrow nudges up-right on hover */
.resume-btn:hover svg {
  transform: translate(2px, -2px);
}

/* Press feedback */
.resume-btn:active {
  transform: scale(0.97);
}

/* ── LIGHT MODE overrides ───────────────────────────── */
/* When light theme is active, filled state uses accent color
   and text turns dark so it stays readable */

[data-theme="light"] .resume-btn:hover,
.light-mode .resume-btn:hover,
body.light .resume-btn:hover {
  color: #fff;   /* adjust if your --accent is a light hue */
}

/* ── THEME TOGGLE BUTTON ───────────────────────────── */

.theme-toggle-btn {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: border-color 0.3s ease;
  padding: 0;
}

/* Ripple ring that expands on click */
.toggle-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--accent);
  opacity: 0;
  transform: scale(0.6);
  transition: none;
  pointer-events: none;
}

.theme-toggle-btn.ripple .toggle-ring {
  animation: ring-burst 0.45s ease-out forwards;
}

@keyframes ring-burst {
  0%   { opacity: 0.8; transform: scale(0.6); }
  100% { opacity: 0;   transform: scale(1.5); }
}

/* Icon container — stacks sun on top of moon */
.toggle-track {
  position: relative;
  width: 20px;
  height: 20px;
}

.toggle-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--accent);
  transition: 
    opacity 0.35s ease,
    transform 0.45s cubic-bezier(0.4, 0, 0.2, 1),
    filter 0.35s ease;
  line-height: 20px;
}

/* Default (dark mode): sun visible, moon hidden below */
.sun-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.moon-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

/* Light mode: moon visible, sun hidden above */
body.light-mode .sun-icon,
[data-theme="light"] .sun-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

body.light-mode .moon-icon,
[data-theme="light"] .moon-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Hover — subtle glow pulse on the icon */
.theme-toggle-btn:hover .toggle-icon {
  filter: drop-shadow(0 0 5px var(--accent));
}

/* Hover — border brightens */
.theme-toggle-btn:hover {
  border-color: var(--accent);
}

/* Press */
.theme-toggle-btn:active {
  transform: scale(0.92);
}


/* =========================================
   6. MOBILE MENU
   ========================================= */

#mobile-menu {
    background: color-mix(in srgb, var(--bg-main), transparent 10%);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* =========================================
   HERO STATUS BADGE
   ========================================= */

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px 6px 10px;
    border-radius: 999px;
    border: 1px solid var(--accent);
    background: var(--accent-glow);
    color: var(--accent);
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}

/* Shimmer sweep on load */
.status-badge::after {
    content: '';
    position: absolute;
    top: 0;
    left: -60%;
    width: 40%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.12),
        transparent
    );
    animation: badge-shimmer 3s ease-in-out infinite;
    animation-delay: 1.2s;
}

@keyframes badge-shimmer {
    0%   { left: -60%; }
    100% { left: 130%; }
}

/* Pulsing live dot */
.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
    position: relative;
}

.status-dot::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.35;
    animation: dot-ping 1.8s ease-out infinite;
}

@keyframes dot-ping {
    0%   { transform: scale(1);   opacity: 0.35; }
    70%  { transform: scale(2.2); opacity: 0; }
    100% { transform: scale(2.2); opacity: 0; }
}

/* Light mode — keep dot readable */
[data-theme="light"] .status-dot,
[data-theme="light"] .status-dot::before {
    background: var(--accent);
}


/* =========================================
   7. INTERACTIVE CURSOR GLOW
   ========================================= */

#interactive-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
    background: radial-gradient(
        450px circle at var(--x, 50%) var(--y, 50%),
        var(--accent-glow),
        transparent 80%
    );
}

@media (max-width: 768px) {
    #interactive-glow {
        background: radial-gradient(
            250px circle at var(--x, 50%) var(--y, 50%),
            var(--accent-glow),
            transparent 80%
        );
    }
}


/* =========================================
   8. SKILLS SECTION
   ========================================= */

.skill-item {
    cursor: default;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

/* Dark mode hover — glowing white */
.skill-item:hover {
    color: #ffffff !important;
    text-shadow:
        0 0 6px  rgba(255, 255, 255, 0.95),
        0 0 14px rgba(255, 255, 255, 0.65),
        0 0 28px rgba(255, 255, 255, 0.35) !important;
}

/* Light mode hover — solid black, no glow */
[data-theme="light"] .skill-item:hover {
    color: #000000 !important;
    text-shadow: none !important;
}


/* =========================================
   9. NEO BORDER & CARDS
   ========================================= */

.neo-border {
    border: 1px solid var(--border-color);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.neo-border:hover {
    border-color: var(--accent);
    box-shadow: 0 0 25px var(--accent-glow);
    transform: translateY(-5px);
    background-color: var(--bg-card);
}


/* =========================================
   10. VISUAL EFFECTS — Glow, Pulse, Buttons
   ========================================= */

/* Profile / hero icon pulse */
.glow-image {
    transition: all 0.5s ease;
}

.group:hover .glow-image,
.glow-image:hover {
    filter: drop-shadow(0 0 15px var(--accent));
    transform: scale(1.05);
}

.hero-glow-pulse {
    animation: imagePulse 3s infinite ease-in-out;
}

@keyframes imagePulse {
    0%, 100% { filter: drop-shadow(0 0  8px var(--accent-glow)); }
    50%       { filter: drop-shadow(0 0 25px var(--accent-glow)); }
}

/* Chart-line icon subtle pulse */
.fa-chart-line {
    animation: subtlePulse 3s infinite ease-in-out;
}

@keyframes subtlePulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.7; transform: scale(1.1); }
}

/* Typography accent */
.text-neoGreen {
    color: var(--accent);
    text-shadow: 0 0 10px var(--accent-glow);
}

/* Base button */
.btn-neo {
    background: var(--accent);
    color: #ffffff;
    font-weight: 700;
    display: inline-block;
    transition: all 0.3s;
}

[data-theme="light"] .btn-neo {
    color: #ffffff;
}

.btn-neo:hover {
    box-shadow: 0 0 20px var(--accent-glow);
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .btn-neo:active { transform: scale(0.98); }
}


/* =========================================
   11. PROJECT CARDS
   ========================================= */

.project-card {
    transform-style: preserve-3d;
    transform: perspective(1000px) rotateX(0deg) rotateY(0deg);
    transition: box-shadow 0.15s ease;
    will-change: transform;
    cursor: pointer;
}

/* Shine overlay (follows cursor via JS) */
.project-card .shine {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(
        circle at var(--mx, 50%) var(--my, 50%),
        rgba(255, 255, 255, 0.08) 0%,
        transparent 60%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 20;
}

.project-card:hover .shine {
    opacity: 1;
}

/* Card icon float on hover */
.card-icon {
    transition: transform 0.4s ease, color 0.4s ease, filter 0.4s ease;
}

.project-card:hover .card-icon {
    transform: translateY(-6px) scale(1.1);
    filter: drop-shadow(0 0 12px var(--accent-glow, rgba(255, 255, 255, 0.4)));
}

/* Tag background pop on hover */
.project-card .tag {
    transition: all 0.2s ease;
}

.project-card:hover .tag {
    background-color: color-mix(in srgb, var(--accent) 10%, transparent);
}

/* Stagger fade-up entrance animation */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(32px); }
    to   { opacity: 1; transform: translateY(0); }
}

.card-wrap {
    opacity: 0;
    animation: fadeUp 0.6s ease forwards;
}

.card-wrap:nth-child(1) { animation-delay: 0.05s; }
.card-wrap:nth-child(2) { animation-delay: 0.15s; }
.card-wrap:nth-child(3) { animation-delay: 0.25s; }
.card-wrap:nth-child(4) { animation-delay: 0.35s; }


/* =========================================
   12. SOCIAL ICONS — Ripple + Tooltip
   ========================================= */

/* Ripple ring */
.social-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid var(--accent);
    opacity: 0;
    transform: scale(1);
}

.social-icon:hover::after {
    animation: ripple-ring 0.55s ease-out forwards;
}

@keyframes ripple-ring {
    0%   { transform: scale(1);   opacity: 0.8; }
    100% { transform: scale(1.9); opacity: 0; }
}

/* Tooltip — dark mode: black text on accent */
.social-icon::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    background: var(--accent);
    color: #000000;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.05em;
    white-space: nowrap;
    padding: 3px 8px;
    border-radius: 4px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
    box-shadow: 0 0 10px var(--accent-glow);
}

.social-icon:hover::before {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Tooltip — light mode: white text on accent */
[data-theme="light"] .social-icon::before {
    color: #ffffff;
}


/* =========================================
   13. CONTACT FORM — Floating Labels
   ========================================= */

.field-wrap {
    position: relative;
    width: 100%;
}

/* Input & textarea base */
.field-wrap input,
.field-wrap textarea {
    width: 100%;
    background-color: var(--bg-card);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    padding: 1.35rem 1.2rem 0.5rem 1.2rem;
    border-radius: 0.85rem;
    outline: none;
    color: var(--text-main);
    font-size: 0.95rem;
    font-family: inherit;
    resize: none;
    transition:
        border-color 0.25s ease,
        background-color 0.25s ease,
        box-shadow 0.25s ease;
}

/* Light mode border */
[data-theme="light"] .field-wrap input,
[data-theme="light"] .field-wrap textarea {
    border-color: rgba(0, 0, 0, 0.3);
}

/* Hide placeholder (used for floating label trick) */
.field-wrap input::placeholder,
.field-wrap textarea::placeholder {
    color: transparent;
}

/* Focus state */
.field-wrap input:focus,
.field-wrap textarea:focus {
    border-color: var(--accent);
    background-color: var(--bg-card-dark);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Filled but unfocused */
.field-wrap input:not(:placeholder-shown),
.field-wrap textarea:not(:placeholder-shown) {
    border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

/* Floating label base */
.field-wrap label {
    position: absolute;
    left: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.95rem;
    color: var(--text-muted);
    pointer-events: none;
    line-height: 1;
    transition:
        top 0.22s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.22s cubic-bezier(0.4, 0, 0.2, 1),
        font-size 0.22s cubic-bezier(0.4, 0, 0.2, 1),
        color 0.22s ease,
        font-weight 0.22s ease;
}

/* Textarea label starts at top */
.textarea-wrap label {
    top: 1.2rem;
    transform: none;
}

/* Floated label state */
.field-wrap input:focus ~ label,
.field-wrap input:not(:placeholder-shown) ~ label,
.field-wrap textarea:focus ~ label,
.field-wrap textarea:not(:placeholder-shown) ~ label {
    top: 0.42rem;
    transform: none;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.04em;
}


/* =========================================
   14. SUBMIT BUTTON — Shine + Underline
   ========================================= */

.btn-neo-end {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    cursor: pointer;
    background: var(--accent);
    color: #ffffff;
    font-weight: 700;
    display: inline-block;
    transform: none !important;
    transition: color 0.3s ease, letter-spacing 0.3s ease;
}

[data-theme="light"] .btn-neo-end {
    color: #ffffff;
}

/* Diagonal shine sweep */
.btn-neo-end::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent 0%,
        rgba(255, 255, 255, 0.35) 50%,
        transparent 100%
    );
    transform: skewX(-20deg);
    transition: left 0.55s ease;
    z-index: 1;
    pointer-events: none;
}

/* Accent underline slide */
.btn-neo-end::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background-color: var(--accent);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

.btn-neo-end:hover::before { left: 150%; }
.btn-neo-end:hover::after  { width: 100%; }

.btn-neo-end:hover {
    letter-spacing: 0.08em;
    transform: none !important;
}

.btn-neo-end:active {
    opacity: 0.85;
    transform: none !important;
}


/* =========================================
   15. SCROLLBAR
   ========================================= */

::-webkit-scrollbar       { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

@media (max-width: 768px) {
    ::-webkit-scrollbar { width: 3px; }
}


/* =========================================
   16. CLICK SPARK
   ========================================= */

.click-spark {
    position: absolute;
    width: 3px;
    height: 3px;
    background: linear-gradient(to top, #00ff95, #918f8f);
    pointer-events: none;
    transform-origin: center bottom;
    animation: spark-move 1000ms ease forwards;
    filter: drop-shadow(0 0 6px #01de82);
}

@keyframes spark-move {
    0%   { opacity: 1; transform: translate(0, 0) scale(1); }
    100% { opacity: 0; transform: translate(var(--dx), var(--dy)) scale(0.3); }
}


/* =========================================
   17. MEDIA QUERIES
   ========================================= */

@media (min-width: 768px) and (max-width: 1024px) {
    h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
    h2 { font-size: clamp(2rem, 4vw, 3rem); }
}

/* =========================================
   18. CERTIFICATE BUTTON — Glow Flood Effect
   ========================================= */

.cert-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 4rem;
    gap: 0.6rem;
    padding: 0.8rem 5.6rem;
    border-radius: 5rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    text-decoration: none;
    font-family: inherit;
    cursor: pointer;
    position: relative;
    isolation: isolate;
    overflow: visible;
    border: none;
    outline: none;
    background: transparent;
    color: var(--accent);
    box-shadow:
        inset 0 0 0 1.5px var(--accent),
        0 0 0px 0px transparent;
    transition:
        color 0.45s ease,
        box-shadow 0.45s ease;
}

/* Inner glow flood — rises from bottom */
.cert-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(
        ellipse 80% 60% at 50% 120%,
        var(--accent) 0%,
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.5s ease, transform 0.5s ease;
    transform: scaleY(0.3);
    transform-origin: bottom;
    z-index: -1;
}

/* Outer bloom */
.cert-btn::after {
    content: '';
    position: absolute;
    inset: -14px;
    border-radius: 1.1rem;
    background: radial-gradient(
        ellipse 90% 55% at 50% 100%,
        var(--accent-glow) 0%,
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: -2;
    pointer-events: none;
    filter: blur(10px);
}

.cert-btn:hover::before {
    opacity: 0.22;
    transform: scaleY(1);
}

.cert-btn:hover::after {
    opacity: 1;
}

.cert-btn:hover {
    color: #ffffff;
    box-shadow:
        inset 0 0 0 1.5px var(--accent),
        0 0 22px 4px var(--accent-glow),
        0 0 60px 10px rgba(1, 222, 130, 0.1);
}

[data-theme="light"] .cert-btn:hover {
    color: #000000;
    box-shadow:
        inset 0 0 0 1.5px var(--accent),
        0 0 22px 4px var(--accent-glow),
        0 0 60px 10px rgba(29, 148, 120, 0.15);
}

.cert-btn:active { opacity: 0.85; }

/* Top edge glint line */
.cert-glint {
    position: absolute;
    top: 0;
    left: 18%;
    width: 64%;
    height: 1.5px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
    border-radius: 999px;
    pointer-events: none;
}

.cert-btn:hover .cert-glint { opacity: 0.7; }

/* Icon glow on hover */
.cert-btn-icon {
    font-size: 0.8rem;
    position: relative;
    z-index: 2;
    transition: filter 0.45s ease;
}

.cert-btn:hover .cert-btn-icon {
    filter: drop-shadow(0 0 5px var(--accent));
}

@media (max-width: 768px) {
    .cert-btn {
        font-size: 0.68rem;
        padding: 0.7rem 1.8rem;
    }
}

/* =========================================
  19. CERTIFICATE BUTTON — Pulse Glow Arrow
  ========================================= */

@keyframes arrow-pulse {
  0%, 100% {
    transform: translateX(0px);
    text-shadow: 0 0 0px transparent;
    color: inherit;
  }
  50% {
    transform: translateX(5px) scale(1.25);
    text-shadow: 0 0 8px var(--accent), 0 0 18px var(--accent);
    color: var(--accent);
  }
}

.cert-btn .fa-arrow-right {
  display: inline-block;
  transition: color 0.3s ease;
}

.cert-btn:hover .fa-arrow-right {
  animation: arrow-pulse 0.8s ease-in-out infinite;
}

/* ==========================================
 20. CERTIFICATE PAGE
===========================================*/

/* ── IMAGE CARD COMPONENT ── */
.img-card {
    position: relative;
    border-radius: 1.5rem;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 5 / 3; 
    border: 1px solid var(--border-color);
    box-shadow: 0 0 20px rgba(0,0,0,.35);
    transition:
        border-color .4s ease,
        box-shadow    .4s ease,
        transform     .5s cubic-bezier(.175,.885,.32,1.275);
    transform-style: preserve-3d;
    will-change: transform;
}

/* Main image */
.img-card__photo {
    width: 100%;
    height: 100%;
    object-fit: cover;        /* ← fills fully, no gaps */
    object-position: center;  /* keeps certificate centered */
    transition: transform .6s cubic-bezier(.25,.46,.45,.94),
                filter   .6s ease;
    filter: brightness(.85) saturate(1.1);
}

.img-card:hover .img-card__photo {
    transform: scale(1.08);
    filter: brightness(1) saturate(1.3);
}

/* Gradient overlay (always present, darkens bottom) */
.img-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(0,0,0,.88) 0%,
        rgba(0,0,0,.25) 50%,
        transparent     100%
    );
    transition: background .4s ease;
}

.img-card:hover .img-card__overlay {
    background: linear-gradient(
        to top,
        rgba(0,0,0,.92) 0%,
        rgba(0,0,0,.40) 55%,
        transparent     100%
    );
}

/* Accent top-edge glint */
.img-card__glint {
    position: absolute;
    top: 0; left: 10%; right: 10%;
    height: 1.5px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity .5s ease;
    pointer-events: none;
}

.img-card:hover .img-card__glint { opacity: .8; }

/* Tag badge */
.img-card__tag {
    position: absolute;
    top: 1rem; left: 1rem;
    padding: .2rem .75rem;
    border-radius: 999px;
    font-size: .6rem;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    letter-spacing: .15em;
    text-transform: uppercase;
    background: var(--accent);
    color: #000;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity .35s ease, transform .35s ease;
}

.img-card:hover .img-card__tag {
    opacity: 1;
    transform: translateY(0);
}

/* Content (bottom) */
.img-card__body {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 1.5rem;
    transform: translateY(8px);
    transition: transform .4s ease;
}

.img-card:hover .img-card__body { transform: translateY(0); }

.img-card__title {
    font-size: 1.05rem;
    font-weight: 900;
    font-style: italic;
    letter-spacing: -.02em;
    color: white;
    text-transform: uppercase;
    line-height: 1.2;
    margin-bottom: .4rem;
}

.img-card__desc {
    font-size: .72rem;
    color: white;
    line-height: 1.5;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity .4s ease .05s, max-height .4s ease;
}

.img-card:hover .img-card__desc {
    opacity: 1;
    max-height: 5rem;
}

/* Stats row */
.img-card__stats {
    display: flex;
    gap: 1rem;
    margin-top: .75rem;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity .35s ease .1s, transform .35s ease .1s;
}

.img-card:hover .img-card__stats {
    opacity: 1;
    transform: translateY(0);
}

.img-card__stat {
    font-size: .6rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent);          /* dark mode → accent green */
    display: flex;
    align-items: center;
    gap: .3rem;
}

[data-theme="light"] .img-card__stat {
    color: var(--bg-main);         /* light mode → bg-main */
}

/* Accent bar at bottom */
.img-card__bar {
    position: absolute;
    bottom: 0; left: 0;
    height: 2px;
    width: 0;
    background: var(--accent);
    transition: width .5s cubic-bezier(.4,0,.2,1);
}

.img-card:hover .img-card__bar { width: 100%; }

/* Click ripple */
.img-card__ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(1,222,130,.25);
    transform: scale(0);
    animation: rippleOut .7s ease forwards;
    pointer-events: none;
}

@keyframes rippleOut {
    to { transform: scale(4); opacity: 0; }
}

/* Wide card variant */
.img-card--wide {
    aspect-ratio: 16 / 9;
}

/* Section reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
}

/* Filter pills */
.filter-pill {
    padding: .4rem 1.2rem;
    border-radius: 999px;
    font-size: .65rem;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    letter-spacing: .15em;
    text-transform: uppercase;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    background: transparent;
    cursor: pointer;
    transition: all .25s ease;
}

.filter-pill:hover,
.filter-pill.active {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
}

.filter-pill.active {
    box-shadow: 0 0 12px var(--accent-glow);
}

/* Grid masonry-ish layout */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); /* wider min */
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .cards-grid { grid-template-columns: repeat(2, 1fr); }  /* was 3 */
}

@media (min-width: 1024px) {
    .cards-grid { grid-template-columns: repeat(3, 1fr); }  /* was 4 */
}

/* Card hidden for filter */
.img-card[data-hidden] {
    display: none;
}