/* ===== CSS RESET & VARIABLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;
    --color-accent: #ec4899;
    --color-bg: #0a0a15;
    --color-bg-secondary: #12121f;
    --color-bg-tertiary: #1a1a2e;
    --color-text: #ffffff;
    --color-text-secondary: #a1a1aa;
    --color-border: rgba(255, 255, 255, 0.1);

    --font-primary: 'Inter', sans-serif;
    --font-display: 'Space Grotesk', sans-serif;

    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    overflow-y: auto; /* Explicitly allow vertical scrolling */
    height: 100%;
}

body {
    font-family: var(--font-primary);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    overflow-y: auto; /* Explicitly allow vertical scrolling */
    min-height: 100%;
    position: relative;
}

/* ===== PAGE LOADER ===== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-diamond {
    font-size: 4rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: rotateDiamond 2s ease-in-out infinite;
    margin-bottom: 1rem;
}

.loader-text {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 2rem;
}

.loader-accent {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.loader-bar {
    width: 200px;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    margin: 0 auto;
}

.loader-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 10px;
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% {
        width: 0%;
        margin-left: 0;
    }
    50% {
        width: 100%;
        margin-left: 0;
    }
    100% {
        width: 0%;
        margin-left: 100%;
    }
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== WATERMARK LOGO ===== */
.watermark-logo {
    position: fixed;
    top: 100px;
    right: 30px;
    z-index: 999;
    opacity: 0.2;
    pointer-events: all;
    transition: all 0.3s ease;
    cursor: pointer;
}

.watermark-logo img {
    width: 180px;
    height: auto;
    filter: grayscale(100%) brightness(2);
    transition: filter 0.3s ease;
}

.watermark-logo:hover {
    opacity: 1;
}

.watermark-logo:hover img {
    filter: grayscale(0%) brightness(1);
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1002;
    padding: 1.5rem 0;
    background: rgba(10, 10, 21, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
}

.logo-diamond {
    font-size: 1.75rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: rotateDiamond 3s ease-in-out infinite;
}

@keyframes rotateDiamond {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(180deg); }
}

.logo-text {
    color: var(--color-text);
}

.logo-accent {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width 0.3s ease;
}

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

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

/* ===== LANGUAGE SWITCHER ===== */
.language-switcher {
    position: relative;
    margin-left: 1rem;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-primary);
}

.lang-current {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.lang-arrow {
    font-size: 0.7rem;
    opacity: 0.7;
    transition: transform 0.3s ease;
}

.lang-btn:hover .lang-arrow {
    transform: translateY(2px);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 0.3rem;
    min-width: 70px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 1px rgba(99, 102, 241, 0.3);
    backdrop-filter: blur(10px);
}

.language-switcher:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-switcher:hover .lang-arrow {
    transform: translateY(2px) rotate(180deg);
}

.lang-dropdown button {
    width: 100%;
    padding: 0.5rem 0.7rem;
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    text-align: center;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    position: relative;
}

.lang-dropdown button::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 6px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity 0.2s ease;
}

.lang-dropdown button:hover {
    color: var(--color-text);
    transform: translateX(2px);
}

.lang-dropdown button:hover::before {
    opacity: 0.15;
}

.nav-cta {
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

/* ===== MOBILE MENU ===== */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1003;
    padding: 0;
    position: relative;
}

.hamburger span {
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(10, 10, 21, 0.98);
    backdrop-filter: blur(20px);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-list {
    list-style: none;
    text-align: center;
    margin-bottom: 3rem;
}

.mobile-nav-link {
    display: block;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    margin-bottom: 1.5rem;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.4s ease;
}

.mobile-menu.active .mobile-nav-link {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu.active .mobile-nav-link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.active .mobile-nav-link:nth-child(2) { transition-delay: 0.2s; }
.mobile-menu.active .mobile-nav-link:nth-child(3) { transition-delay: 0.3s; }
.mobile-menu.active .mobile-nav-link:nth-child(4) { transition-delay: 0.4s; }

.mobile-actions {
    text-align: center;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.4s ease 0.5s;
}

.mobile-menu.active .mobile-actions {
    transform: translateY(0);
    opacity: 1;
}

.mobile-lang {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.mobile-lang button {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.diamond-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.diamond-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
    position: absolute;
    top: 0;
    left: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 1000px;
    padding: 2rem;
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    margin-bottom: 2rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(99, 102, 241, 0);
    }
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 7rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.title-line {
    display: block;
    background: linear-gradient(135deg, #ffffff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 1s ease-out backwards;
}

.title-line:nth-child(2) {
    animation-delay: 0.2s;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.8;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

.btn-primary, .btn-secondary {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.6);
}

.btn-primary .btn-icon {
    transition: transform 0.3s ease;
}

.btn-primary:hover .btn-icon {
    transform: translateX(5px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-primary);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    animation: fadeInUp 1s ease-out 0.8s backwards;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-top: 0.5rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    animation: fadeInUp 1s ease-out 1s backwards;
}

.scroll-line {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--color-primary));
    animation: scrollAnimation 2s ease-in-out infinite;
}

@keyframes scrollAnimation {
    0%, 100% {
        transform: translateY(0);
        opacity: 0;
    }
    50% {
        transform: translateY(10px);
        opacity: 1;
    }
}

/* ===== SECTION STYLES ===== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ===== EXPERTISE SECTION ===== */
.expertise {
    padding: 8rem 0;
    background: var(--color-bg-secondary);
    position: relative;
}

.expertise::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.expertise-card {
    position: relative;
    padding: 2.5rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    transition: transform 0.5s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    overflow: hidden;
    cursor: pointer;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: var(--transition);
}

.expertise-card:hover::before {
    opacity: 0.05;
}

.expertise-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
    position: relative;
    z-index: 1;
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.card-description {
    color: var(--color-text-secondary);
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

/* ===== SERVICES SECTION ===== */
.services {
    padding: 8rem 0;
    background: var(--color-bg);
    position: relative;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: transform 0.5s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    cursor: default;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    filter: drop-shadow(0 0 15px rgba(99, 102, 241, 0.3));
    transition: transform 0.3s ease, color 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.1);
    color: var(--color-accent);
}

.service-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.service-card h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text);
}

/* ===== PROJECTS SECTION ===== */
.projects {
    padding: 8rem 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.project-card {
    position: relative;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.5s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.project-card.large {
    grid-column: span 2;
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.project-image {
    height: 300px;
    position: relative;
    overflow: hidden;
}

.project-card.large .project-image {
    height: 400px;
}

.project-image img,
.project-image video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
}

.project-gradient {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.4) 0%, rgba(118, 75, 162, 0.4) 100%);
    transition: transform 0.2s ease;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.project-card:hover .project-gradient {
    transform: scale(1.1);
}

.project-content {
    padding: 2rem;
}

.project-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.project-description {
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tech span {
    padding: 0.5rem 1rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.875rem;
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: 8rem 0;
    background: var(--color-bg-secondary);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-description {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 3rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    color: var(--color-primary);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.25rem;
}

.contact-value {
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-form {
    background: var(--color-bg-tertiary);
    padding: 2.5rem;
    border: 1px solid var(--color-border);
    border-radius: 20px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== CHECKBOX GRID ===== */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.checkbox-grid .checkbox-item {
    display: flex;
    align-items: center;
    margin-bottom: 0;
    gap: 0.4rem;
    cursor: pointer;
    padding: 0.6rem 0.8rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    font-size: 0.9rem;
}

.checkbox-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
}

/* Modern browsers: Highlight container when checked */
.checkbox-item:has(input:checked) {
    border-color: var(--color-primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.15);
}

.checkbox-item input {
    display: none;
}

.checkbox-custom {
    width: 16px;
    height: 16px;
    border: 2px solid var(--color-border);
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.2);
}

.checkbox-item input:checked + .checkbox-custom {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-color: transparent;
    transform: scale(1.1);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
}

.checkbox-item input:checked + .checkbox-custom::after {
    content: '✓';
    color: white;
    font-size: 10px;
    font-weight: 800;
}

.checkbox-item span:last-child {
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color 0.3s ease;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.checkbox-item input:checked ~ span:last-child {
    color: white;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

.full-width {
    width: 100%;
}

/* ===== FOOTER ===== */
.footer {
    padding: 4rem 0 2rem;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    color: var(--color-text-secondary);
    margin-top: 1rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-family: var(--font-display);
    margin-bottom: 1rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .watermark-logo {
        top: 80px;
        right: 20px;
        opacity: 0.15;
    }

    .watermark-logo img {
        width: 120px;
    }

    .nav-menu, .language-switcher, .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .nav-container {
        padding: 0 1.5rem;
    }

    .hero-stats {
        gap: 2rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .project-card.large {
        grid-column: span 1;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .watermark-logo {
        display: none;
    }

    .container {
        padding: 0 1.25rem;
    }

    /* Hero optimizations */
    .hero {
        padding-top: 100px;
        min-height: 100vh;
        min-height: -webkit-fill-available;
    }

    .hero-content {
        padding: 1.5rem;
    }

    .hero-title {
        font-size: clamp(2.5rem, 12vw, 4rem);
        margin-bottom: 1rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .hero-badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
        margin-bottom: 1.5rem;
    }

    /* Diamond container mobile */
    .diamond-container {
        opacity: 0.6;
    }

    /* Stats */
    .stat-number {
        font-size: 2.5rem;
    }

    .stat-label {
        font-size: 0.85rem;
    }

    /* Sections */
    .expertise, .services, .projects, .contact {
        padding: 4rem 0;
    }

    .section-header {
        margin-bottom: 2.5rem;
    }

    .section-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .section-subtitle {
        font-size: 1rem;
    }

    /* Cards */
    .expertise-grid,
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .expertise-card,
    .service-card {
        padding: 2rem 1.5rem;
    }

    /* Buttons */
    .btn-primary, .btn-secondary {
        padding: 0.875rem 1.75rem;
        font-size: 1rem;
        width: 100%;
        justify-content: center;
    }

    .checkbox-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .checkbox-grid .checkbox-item {
        padding: 0.75rem;
        font-size: 0.9rem;
        word-break: break-word;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

    /* Project cards mobile */
    .project-image {
        height: 250px;
    }

    .project-card.large .project-image {
        height: 300px;
    }

    .project-content {
        padding: 1.5rem;
    }

    .project-title {
        font-size: 1.5rem;
    }

    /* Contact form mobile */
    .contact-form {
        padding: 2rem 1.5rem;
    }

    .contact-content {
        gap: 2.5rem;
    }

    /* Back to top mobile */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }

    /* Social buttons mobile */
    .social-float-container {
        bottom: 20px;
        left: 20px;
        gap: 10px;
    }

    .social-float {
        width: 50px;
        height: 50px;
    }

    .social-float svg {
        width: 26px;
        height: 26px;
    }

    /* PWA install prompt mobile */
    .pwa-install-prompt {
        bottom: 10px;
        width: 95%;
    }

    .pwa-install-content {
        padding: 1.25rem;
    }

    /* Scroll indicator mobile */
    .scroll-indicator {
        bottom: 2rem;
        font-size: 0.75rem;
    }

    /* Typography */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }

    /* Reduce motion for performance on mobile */
    @media (prefers-reduced-motion: reduce) {
        * {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
        }
    }
}

/* Very small devices */
@media (max-width: 375px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .pwa-install-content {
        padding: 1rem;
        gap: 0.75rem;
    }

    .pwa-text h3 {
        font-size: 1.1rem;
    }

    .pwa-text p {
        font-size: 0.85rem;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Intersection Observer Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 990;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

/* ===== SOCIAL MEDIA FLOATING BUTTONS ===== */
.social-float-container {
    position: fixed;
    bottom: 30px;
    left: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 990;
}

.social-float {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: scale(0);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
}

.social-float svg {
    width: 32px;
    height: 32px;
    transition: transform 0.3s ease;
    position: relative;
    z-index: 2;
}

.social-float:hover svg {
    transform: scale(1.1);
}

.social-float:active {
    transform: scale(0.95) !important;
}

/* Instagram Button */
.instagram-float {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    box-shadow: 0 4px 20px rgba(188, 24, 136, 0.4);
    animation: fadeInScale 0.6s ease-out 1s forwards;
}

.instagram-float:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 30px rgba(188, 24, 136, 0.6);
}

.instagram-float::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    opacity: 0.7;
    animation: pulse-instagram 2s ease-out infinite;
    z-index: 1;
}

/* TikTok Button */
.tiktok-float {
    background: #000000;
    box-shadow: 0 4px 20px rgba(255, 0, 80, 0.4);
    animation: fadeInScale 0.6s ease-out 1.2s forwards;
}

.tiktok-float:hover {
    transform: scale(1.1) rotate(-5deg);
    box-shadow: 0 6px 30px rgba(255, 0, 80, 0.6),
                0 0 20px rgba(0, 255, 255, 0.4);
}

.tiktok-float::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff0050 0%, #00f2ea 100%);
    opacity: 0.7;
    animation: pulse-tiktok 2s ease-out infinite;
    z-index: 1;
}

/* WhatsApp Button */
.whatsapp-float {
    background: #25D366;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    animation: fadeInScale 0.6s ease-out 1.4s forwards;
}

.whatsapp-float:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-float::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: #25D366;
    opacity: 0.7;
    animation: pulse-whatsapp 2s ease-out infinite;
    z-index: 1;
}

@keyframes pulse-whatsapp {
    0% {
        transform: scale(1);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.2);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

/* Animations */
@keyframes fadeInScale {
    to {
        opacity: 1;
        visibility: visible;
        transform: scale(1);
    }
}

@keyframes pulse-instagram {
    0% {
        transform: scale(1);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.2);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

@keyframes pulse-tiktok {
    0% {
        transform: scale(1);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.2);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

/* ===== PWA INSTALL PROMPT ===== */
.pwa-install-prompt {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(120%);
    max-width: 400px;
    width: 90%;
    z-index: 1100;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.pwa-install-prompt.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.pwa-install-content {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-primary);
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(99, 102, 241, 0.3);
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
}

.pwa-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border-radius: 50%;
}

.pwa-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text);
}

.pwa-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 16px;
    padding: 10px;
}

.pwa-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.pwa-text {
    text-align: center;
}

.pwa-text h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.pwa-text p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.pwa-install-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.pwa-install-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.pwa-install-btn:active {
    transform: translateY(0);
}

/* ===== OFFLINE INDICATOR ===== */
.offline-indicator {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-120%);
    background: var(--color-bg-secondary);
    border: 1px solid #f59e0b;
    border-radius: 12px;
    padding: 0.75rem 1.5rem;
    color: #fbbf24;
    font-weight: 600;
    z-index: 1100;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
}

.offline-indicator.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.offline-indicator::before {
    content: '⚠️';
    margin-right: 0.5rem;
}

/* ===== MOBILE OPTIMIZATIONS ===== */
/* Touch-friendly interactive elements */
@media (hover: none) and (pointer: coarse) {
    /* Increase tap target sizes for mobile */
    .nav-link, .lang-btn, .checkbox-item {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    /* Remove hover effects on touch devices */
    .expertise-card:hover,
    .service-card:hover,
    .project-card:hover {
        transform: none;
    }

    /* Add active states for touch */
    .btn-primary:active,
    .btn-secondary:active {
        transform: scale(0.95);
    }

    .nav-link:active,
    .mobile-nav-link:active {
        opacity: 0.7;
    }
}

/* iOS specific optimizations */
@supports (-webkit-touch-callout: none) {
    /* Fix iOS viewport height issues */
    .hero {
        min-height: -webkit-fill-available;
    }

    /* Disable iOS text size adjustment */
    body {
        -webkit-text-size-adjust: 100%;
    }

    /* Smooth scrolling on iOS */
    html {
        -webkit-overflow-scrolling: touch;
    }
}

/* Better font rendering on mobile */
@media screen and (max-width: 768px) {
    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        text-rendering: optimizeLegibility;
    }

    /* Pull-to-refresh prevention on mobile only */
    body {
        overscroll-behavior-y: contain;
        touch-action: pan-y; /* Allow vertical scrolling on touch devices */
    }

    /* Ensure scrolling is always possible */
    html, body {
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch;
    }

    /* ===== MOBILE PERFORMANCE OPTIMIZATIONS ===== */

    /* Disable expensive hover animations on mobile (no hover on touch devices anyway) */
    .skill-card:hover,
    .project-card:hover,
    .service-item:hover,
    .btn:hover,
    .social-link:hover {
        transform: none !important;
    }

    /* Remove will-change to reduce GPU usage - only on performance-heavy elements */
    .skill-card,
    .project-card,
    .service-item,
    .btn,
    video {
        will-change: auto !important;
    }

    /* Disable complex gradient animations that are GPU-intensive */
    .hero::before,
    .hero::after {
        animation: none !important;
    }

    /* Simplify scroll-triggered animations - remove vertical movement, keep fade only */
    @keyframes fadeInUp {
        from {
            opacity: 0;
        }
        to {
            opacity: 1;
        }
    }

    @keyframes fadeInScale {
        from {
            opacity: 0;
        }
        to {
            opacity: 1;
        }
    }

    /* Optimize video rendering */
    video {
        transform: none !important;
    }

    /* Faster transitions only for performance-heavy elements, not everything */
    .project-card,
    .skill-card,
    .service-item {
        transition-duration: 0.2s !important;
    }
}