/* ----------------------------------------------------
   DESIGN SYSTEM & VARIABLES
   ---------------------------------------------------- */

:root[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f6f6;
    --text-primary: #121212;
    --text-secondary: #666666;
    --border-color: #e5e5e5;
    --border-hover: #121212;
    --accent-color: #3b82f6; /* Modern Blue */
    --accent-color-rgb: 59, 130, 246;
    --accent-hover: #1d4ed8;
    --card-bg: #ffffff;
    --card-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
    --input-bg: #fdfdfd;
    --glow-1: rgba(16, 185, 129, 0.08);
    --glow-2: rgba(139, 92, 246, 0.06);
    --glow-3: rgba(6, 182, 212, 0.06);
    --glow-opacity: 0.75;
    --grid-color: rgba(59, 130, 246, 0.02);
    --grid-opacity: 0.7;
    --card-bg-glass: rgba(255, 255, 255, 0.55);
    --card-border-glass: rgba(0, 0, 0, 0.06);
    --card-shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.04);
}

:root[data-theme="dark"] {
    --bg-primary: #050508;
    --bg-secondary: #0a0a0f;
    --text-primary: #f5f5f5;
    --text-secondary: #999999;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.2);
    --accent-color: #ffffff;
    --accent-color-rgb: 255, 255, 255;
    --accent-hover: #cccccc;
    --card-bg: rgba(13, 13, 18, 0.45);
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --input-bg: rgba(255, 255, 255, 0.03);
    --glow-1: rgba(16, 185, 129, 0.28);
    --glow-2: rgba(139, 92, 246, 0.22);
    --glow-3: rgba(6, 182, 212, 0.20);
    --glow-opacity: 0.95;
    --grid-color: rgba(16, 185, 129, 0.04);
    --grid-opacity: 1;
    --card-bg-glass: rgba(13, 13, 18, 0.45);
    --card-border-glass: rgba(255, 255, 255, 0.08);
    --card-shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

/* ----------------------------------------------------
   BASE STYLES
   ---------------------------------------------------- */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
}

/* Grid Overlay */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 80px 80px;
    background-position: center center;
    pointer-events: none;
    z-index: -1;
    opacity: var(--grid-opacity);
    transition: opacity 0.3s ease;
}

/* Shifting Glowing Backdrops matching S rotating colors */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
    background-image: 
        radial-gradient(circle at 15% 15%, var(--glow-1) 0%, transparent 45%),
        radial-gradient(circle at 85% 25%, var(--glow-2) 0%, transparent 45%),
        radial-gradient(circle at 50% 75%, var(--glow-3) 0%, transparent 50%);
    background-size: 200% 200%;
    background-position: 0% 0%;
    filter: blur(60px);
    opacity: var(--glow-opacity);
    animation: waveGlows 20s infinite alternate ease-in-out;
    transition: opacity 0.3s ease;
}

@keyframes waveGlows {
    0% {
        background-position: 0% 0%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 50% 100%;
    }
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.small-container {
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

a {
    color: inherit;
    text-decoration: none;
}

li {
    list-style: none;
}

img, svg {
    max-width: 100%;
    height: auto;
    display: block;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.15;
}

/* ----------------------------------------------------
   HEADER & NAVIGATION
   ---------------------------------------------------- */

.header {
    position: fixed;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 3rem);
    max-width: 1100px;
    height: 64px;
    z-index: 100;
    background-color: rgba(10, 10, 10, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

:root[data-theme="light"] .header {
    background-color: rgba(255, 255, 255, 0.7);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    width: 100%;
    padding: 0 2rem;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.01em;
}

.logo-dot {
    color: var(--accent-color);
    margin-left: 1px;
}

.nav {
    display: block;
}

.nav-list {
    display: flex;
    gap: 3rem;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 450;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1.5px;
    background-color: var(--text-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

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

/* Language Switcher Link button */
.lang-switch {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.35rem 0.65rem;
    background-color: var(--bg-secondary);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.lang-switch:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background-color: var(--card-bg-glass);
}

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

:root[data-theme="light"] .moon-icon {
    display: block;
}

:root[data-theme="dark"] .sun-icon {
    display: block;
}

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

/* Mobile Hamburger button */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 32px;
    height: 32px;
    position: relative;
    z-index: 110;
}

.hamburger {
    display: block;
    width: 24px;
    height: 1.5px;
    background-color: var(--text-primary);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: background-color 0.2s ease;
}

.hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 1.5px;
    background-color: var(--text-primary);
    left: 0;
    transition: transform 0.3s cubic-bezier(0.215, 0.61, 0.355, 1);
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

/* Active hamburger state */
.mobile-nav-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
}

/* Mobile menu overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-primary);
    z-index: 95;
    opacity: 0;
    pointer-events: none;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.mobile-nav-link {
    font-size: 2rem;
    font-weight: 500;
    font-family: 'Outfit', sans-serif;
    color: var(--text-secondary);
}

.mobile-nav-link:hover {
    color: var(--text-primary);
}

/* ----------------------------------------------------
   HERO SECTION
   ---------------------------------------------------- */

.hero-section {
    padding-top: 100px;
    padding-bottom: 30px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden; /* Avoid overflow from the large S background */
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    z-index: 10; /* Position content on top of background S */
}

@media(min-width: 900px) {
    .hero-container {
        max-width: 850px;
        margin: 0 auto;
    }
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 10; /* Render text on top of the rotating S background container */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-eyebrow {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 700;
    line-height: 1.05;
    margin-bottom: 1.75rem;
    color: var(--text-primary);
}

.hero-description {
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    font-weight: 300;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 2.5rem;
    letter-spacing: -0.01em;
    max-width: 680px;
}

.hero-description strong {
    color: var(--text-primary);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* Super S Animation - Placed at the top with a small footprint, scaling up the video */
.hero-animation-container.fade-in {
    position: relative;
    top: auto;
    left: auto;
    transform: translateY(24px); /* Initial offset for mobile fade-in */
    opacity: 0;
    width: 100%;
    max-width: 200px; /* Small footprint on mobile */
    height: 130px;
    z-index: 10;
    pointer-events: none;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-animation-container.fade-in.visible {
    opacity: 1; /* Completely sharp */
    transform: translateY(0);
}

.hero-animation-container::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(var(--accent-color-rgb), 0.15) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
    filter: blur(50px);
    border-radius: 50%;
}

@media(min-width: 900px) {
    .hero-animation-container.fade-in {
        position: relative;
        left: auto;
        right: auto;
        transform: translateY(24px);
        max-width: 360px; /* Balanced height footprint on desktop */
        height: 220px;
        margin-bottom: 3.5rem;
        top: auto;
    }
    
    .hero-animation-container.fade-in.visible {
        opacity: 1;
        transform: translateY(0);
    }

    .hero-animation-container::before {
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(var(--accent-color-rgb), 0.18) 0%, transparent 70%);
        filter: blur(80px);
    }
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: contain; /* Prevents video clipping/cutting at boundaries */
    border-radius: 8px;
    /* Blend and filter WebM transparency */
    mix-blend-mode: normal;
    filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.35));
    transition: transform 0.4s ease;
    transform: scale(1.8); /* Scale up S visually on mobile */
}

@media(min-width: 900px) {
    .hero-video {
        transform: scale(2.4); /* Scale up S visually on desktop to be massive */
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-primary);
    border: 1px solid var(--text-primary);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* ----------------------------------------------------
   SECTION LAYOUTS
   ---------------------------------------------------- */

section {
    padding: 100px 0;
    border-bottom: 1px solid var(--border-color);
}

.section-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media(min-width: 900px) {
    .section-grid {
        grid-template-columns: 1fr 2fr;
    }
}

.section-header {
    max-width: 400px;
}

.section-header.centered {
    max-width: 700px;
    margin: 0 auto 5rem auto;
    text-align: center;
}

.section-eyebrow {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: var(--text-primary);
}

.section-subtitle {
    margin-top: 1rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ----------------------------------------------------
   ABOUT ME SECTION
   ---------------------------------------------------- */

.about-section {
    background-color: var(--bg-secondary);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-text {
    font-size: 1.15rem;
    font-weight: 350;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ----------------------------------------------------
   SERVICES SECTION
   ---------------------------------------------------- */

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media(min-width: 600px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media(min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.service-card {
    background-color: var(--card-bg-glass);
    border: 1px solid var(--card-border-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 2.5rem 2rem;
    border-radius: 6px;
    box-shadow: var(--card-shadow-glass);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, background-color 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
}

.service-icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 4px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
}

.service-card-title {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-card-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ----------------------------------------------------
   PROJECTS SECTION
   ---------------------------------------------------- */

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media(min-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projects-grid > .project-card-link:first-child {
        grid-column: span 2;
    }
}

.project-card {
    background-color: var(--card-bg-glass);
    border: 1px solid var(--card-border-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 6px;
    box-shadow: var(--card-shadow-glass);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, background-color 0.3s ease;
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

/* Media wrapper for dynamic loader */
.project-media-wrapper {
    aspect-ratio: 16 / 10;
    background-color: rgba(0, 0, 0, 0.15);
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid var(--card-border-glass);
    overflow: hidden;
    position: relative;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.project-card:hover .project-img {
    transform: scale(1.05);
}

/* States logic */
.project-media-wrapper.show-placeholder .project-img {
    display: none;
}
.project-media-wrapper.show-placeholder .placeholder-graphic {
    display: flex;
}
.project-media-wrapper:not(.show-placeholder) .placeholder-graphic {
    display: none;
}

.placeholder-graphic {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
}

.placeholder-icon {
    opacity: 0.4;
    transition: transform 0.3s ease;
}

.project-card:hover .placeholder-icon {
    transform: scale(1.15) rotate(5deg);
}

.project-info {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.project-tag {
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
}

.project-year {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
}

.project-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.project-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
    font-weight: 300;
}

/* ----------------------------------------------------
   CONTACT SECTION
   ---------------------------------------------------- */

.contact-section {
    background-color: var(--bg-secondary);
    border-bottom: none;
    padding-bottom: 140px;
}

.contact-form {
    background-color: var(--card-bg-glass);
    border: 1px solid var(--card-border-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: var(--card-shadow-glass);
}

@media(max-width: 600px) {
    .contact-form {
        padding: 2rem 1.5rem;
    }
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

@media(min-width: 600px) {
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 550;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    font-family: inherit;
    font-size: 1rem;
    padding: 1rem;
    background-color: var(--input-bg);
    border: 1px solid var(--card-border-glass);
    color: var(--text-primary);
    border-radius: 4px;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--text-primary);
    box-shadow: 0 0 0 2px rgba(var(--accent-color-rgb), 0.1);
}

.form-actions {
    margin-top: 2rem;
}

/* ----------------------------------------------------
   FOOTER
   ---------------------------------------------------- */

.footer {
    background-color: var(--bg-primary);
    padding: 80px 0 60px 0;
    border-top: 1px solid var(--border-color);
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media(min-width: 768px) {
    .footer-container {
        grid-template-columns: 2fr 1fr;
    }
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-info .logo {
    font-size: 1.5rem;
}

.footer-tagline {
    font-size: 1rem;
    color: var(--text-secondary);
}

.footer-socials {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
}

@media(min-width: 768px) {
    .footer-socials {
        justify-content: flex-end;
    }
}

.social-link {
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding-bottom: 2px;
}

.social-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--text-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.25s ease;
}

.social-link:hover {
    color: var(--text-primary);
}

.social-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.footer-bottom {
    grid-column: 1 / -1;
    border-top: 1px solid var(--border-color);
    padding-top: 2.5rem;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
}

/* ----------------------------------------------------
   ANIMATION & INTERACTION EFFECT
   ---------------------------------------------------- */

.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Delay classes for staggered intro animation */
.hero-content > *:nth-child(1) { transition-delay: 0.1s; }
.hero-content > *:nth-child(2) { transition-delay: 0.2s; }
.hero-content > *:nth-child(3) { transition-delay: 0.3s; }
.hero-content > *:nth-child(4) { transition-delay: 0.4s; }

/* Film Grain Overlay */
.grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.98' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.015; /* Very subtle and static premium film grain */
    pointer-events: none;
    z-index: 9999;
}

/* ----------------------------------------------------
   RESPONSIVE DESIGN CORRECTIONS (MOBILE / SMALL DEVICE)
   ---------------------------------------------------- */

@media(max-width: 820px) {
    .header {
        top: 1rem;
        width: calc(100% - 2rem);
        height: 60px;
    }
    
    .header-container {
        padding: 0 1.25rem;
    }
    
    .nav {
        display: none; /* Hide standard nav on smaller devices */
    }
    
    .mobile-nav-toggle {
        display: block; /* Show hamburger button */
    }
    
    .hero-section {
        padding-top: 100px;
        padding-bottom: 60px;
    }
    
    .hero-container {
        gap: 2rem;
    }
}

.project-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    color: inherit;
    text-decoration: none;
}

/* ----------------------------------------------------
   PROJECT DETAIL PAGE STYLES
   ---------------------------------------------------- */

.project-detail-page {
    padding-top: 80px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    transition: color 0.2s ease;
}

.back-link:hover {
    color: var(--text-primary);
}

.back-link svg {
    transition: transform 0.2s ease;
}

.back-link:hover svg {
    transform: translateX(-4px);
}

.project-hero {
    padding-top: 80px;
    padding-bottom: 60px;
    border-bottom: 1px solid var(--border-color);
}

.project-category-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.project-detail-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    line-height: 1.05;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-detail-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--text-secondary);
    font-weight: 350;
    margin-bottom: 3.5rem;
}

/* Metadata Grid */
.project-metadata-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    border-top: 1px solid var(--border-color);
    padding-top: 2.5rem;
}

@media(min-width: 768px) {
    .project-metadata-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.meta-label {
    font-size: 0.8rem;
    font-weight: 550;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.meta-value {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 400;
}

/* Description block */
.project-description-section {
    padding: 80px 0;
}

.description-grid-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media(min-width: 768px) {
    .description-grid-layout {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.description-heading {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 0.5rem;
}

.description-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 1.5px;
    background-color: var(--text-primary);
}

.project-detail-desc {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    font-weight: 350;
}

/* Project Gallery section */
.project-gallery-section {
    background-color: var(--bg-secondary);
    padding: 100px 0;
}

.gallery-header {
    margin-bottom: 4rem;
}

.gallery-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.gallery-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
}

/* Detail Gallery Grid */
.detail-gallery-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media(min-width: 768px) {
    .detail-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .full-width-item {
        grid-column: span 2;
    }
}

.gallery-item {
    background-color: var(--card-bg-glass);
    border: 1px solid var(--card-border-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 6px;
    box-shadow: var(--card-shadow-glass);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.gallery-media-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9; /* Strictly 16:9 for perfect symmetry */
    overflow: hidden;
    background-color: var(--bg-secondary);
    cursor: pointer;
}

.gallery-video-player,
.gallery-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.gallery-item:hover .gallery-video-player,
.gallery-item:hover .gallery-img {
    transform: scale(1.03);
}

.gallery-item-info {
    padding: 1.5rem;
    border-top: 1px solid var(--card-border-glass);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: transparent;
}

.gallery-item-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
}

.gallery-item-type {
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 0.15rem 0.5rem;
    border-radius: 50px;
}

.gallery-media-wrapper {
    cursor: pointer;
}

/* Lightbox Modal */
.lightbox {
    position: fixed;
    z-index: 1000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 10, 10, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox.open {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 2.5rem;
    color: var(--text-primary);
    cursor: pointer;
    line-height: 1;
    transition: transform 0.2s ease;
    z-index: 1010;
}

.lightbox-close:hover {
    transform: scale(1.15) rotate(90deg);
}

.lightbox-content-wrapper {
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.lightbox-img,
.lightbox-video {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

/* ----------------------------------------------------
   COIN CARDS & CAROUSEL GRID (BOND PROTOCOL PAGE)
   ---------------------------------------------------- */

.coins-gallery-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}

@media(min-width: 600px) {
    .coins-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media(min-width: 900px) {
    .coins-gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.coin-card {
    background-color: var(--card-bg-glass);
    border: 1px solid var(--card-border-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 6px;
    box-shadow: var(--card-shadow-glass);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
}

.coin-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.coin-info-box {
    padding: 1.5rem;
    border-top: 1px solid var(--card-border-glass);
    text-align: center;
    background-color: transparent;
}

.coin-card-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
}

/* Carousel Inner Box */
.carousel-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1; /* Fichas de poker cuadradas */
    overflow: hidden;
    background-color: var(--bg-secondary);
}

.carousel-slides {
    display: flex;
    width: 400%; /* 4 slides, cada uno toma el 100% de la tarjeta */
    height: 100%;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.carousel-slides .gallery-media-wrapper {
    width: 25%;
    height: 100%;
    aspect-ratio: auto; /* Anula el 16/9 por defecto */
}

.carousel-slides img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Controls style */
.carousel-prev,
.carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(10, 10, 10, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid var(--border-color);
    color: #ffffff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, background-color 0.2s ease, border-color 0.2s ease;
    z-index: 10;
    font-size: 1rem;
}

.carousel-container:hover .carousel-prev,
.carousel-container:hover .carousel-next {
    opacity: 1;
    pointer-events: auto;
}

.carousel-prev {
    left: 1rem;
}

.carousel-next {
    right: 1rem;
}

.carousel-prev:hover,
.carousel-next:hover {
    background-color: #ffffff;
    color: #121212;
    border-color: #ffffff;
}

/* Pagination Dots */
.carousel-dots {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    z-index: 10;
}

.carousel-dots .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #ffffff;
    opacity: 0.4;
    cursor: pointer;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.carousel-dots .dot.active {
    opacity: 1;
    transform: scale(1.25);
    background-color: #ffffff;
}