/* ==================== ROOT VARIABLES ==================== */
:root {
    /* Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    
    /* Brand Colors */
    --brand-primary: #0066ff;
    --brand-secondary: #6366f1;
    --brand-tertiary: #06b6d4;
    --brand-gradient: linear-gradient(135deg, #0066ff 0%, #6366f1 50%, #06b6d4 100%);
    
    /* UI Colors */
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Status Colors */
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Spacing */
    --container-padding: 1.5rem;
    --section-padding: 5rem 0;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

/* ==================== CONTAINER ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ==================== NAVIGATION ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .navbar.scrolled {
    background-color: rgba(15, 23, 42, 0.9);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--container-padding);
    min-height: 80px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    z-index: 1001;
}

.logo {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: opacity var(--transition-normal);
}

/* Show/hide logos based on theme */
.logo-dark {
    display: block;
}

.logo-light {
    display: none;
}

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

[data-theme="light"] .logo-light {
    display: block;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--brand-gradient);
    transition: width var(--transition-normal);
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.theme-toggle i {
    position: absolute;
    font-size: 1.1rem;
    transition: all var(--transition-normal);
}

.theme-toggle .fa-sun {
    color: #f59e0b;
    opacity: 1;
    transform: rotate(0deg);
}

.theme-toggle .fa-moon {
    color: #6366f1;
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle .fa-sun {
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle .fa-moon {
    opacity: 1;
    transform: rotate(0deg);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    transition: all var(--transition-normal);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

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

.hero-background {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.gradient-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.circle-1 {
    width: 500px;
    height: 500px;
    background: var(--brand-primary);
    top: -200px;
    right: -100px;
}

.circle-2 {
    width: 400px;
    height: 400px;
    background: var(--brand-secondary);
    bottom: -100px;
    left: -150px;
    animation-delay: -5s;
}

.circle-3 {
    width: 350px;
    height: 350px;
    background: var(--brand-tertiary);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Hero Image */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    animation: fadeInUp 1s ease 0.3s forwards;
}

.phone-mockup {
    position: relative;
    width: 300px;
    height: 500px;
    background: var(--brand-gradient);
    border-radius: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    animation: levitate 6s ease-in-out infinite;
}

.phone-mockup i {
    font-size: 8rem;
    color: white;
    opacity: 0.9;
}

.mockup-glow {
    position: absolute;
    inset: -20px;
    background: var(--brand-gradient);
    border-radius: 50px;
    filter: blur(40px);
    opacity: 0.5;
    z-index: -1;
}

@keyframes levitate {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
}

.btn:hover::before {
    transform: translateX(0);
}

.btn-primary {
    background: var(--brand-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ==================== SECTIONS ==================== */
section {
    padding: var(--section-padding);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    color: var(--brand-primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== ABOUT SECTION ==================== */
.about {
    background: var(--bg-secondary);
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.about-text p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-primary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-gradient);
    border-radius: 12px;
    flex-shrink: 0;
}

.stat-icon i {
    font-size: 1.75rem;
    color: white;
}

.stat-content h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.stat-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
}

/* ==================== SERVICES SECTION ==================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-card {
    padding: 2.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--brand-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

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

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-gradient);
    border-radius: 16px;
    margin-bottom: 1.5rem;
    transition: all var(--transition-normal);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-icon i {
    font-size: 2.5rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== CONTACT SECTION ==================== */
.contact {
    background: var(--bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

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

.info-card {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--bg-primary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.info-card:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.info-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-gradient);
    border-radius: 12px;
    flex-shrink: 0;
}

.info-icon i {
    font-size: 1.5rem;
    color: white;
}

.info-text h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.info-text p,
.info-text a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.info-text a:hover {
    color: var(--brand-primary);
}

/* Form Styles */
.contact-form-wrapper {
    background: var(--bg-primary);
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    padding: 0.875rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

.form-group input.error,
.form-group textarea.error {
    border-color: var(--error);
}

.form-group input.success,
.form-group textarea.success {
    border-color: var(--success);
}

.error-message {
    color: var(--error);
    font-size: 0.875rem;
    display: none;
    margin-top: 0.25rem;
}

.error-message.show {
    display: block;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--bg-primary);
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.footer-logo {
    height: 45px;
    width: auto;
    object-fit: contain;
    transition: opacity var(--transition-normal);
}

/* Show/hide footer logos based on theme */
.footer-logo.logo-dark {
    display: block;
}

.footer-logo.logo-light {
    display: none;
}

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

[data-theme="light"] .footer-logo.logo-light {
    display: block;
}

.footer-brand p {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.footer-text i {
    color: var(--error);
    animation: heartbeat 1.5s ease infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.footer-year {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

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

.fade-in {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 2rem;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-color);
        max-height: calc(100vh - 60px);
        overflow-y: auto;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-links {
        flex-direction: column;
        gap: 1.5rem;
        width: 100%;
    }

    .nav-link {
        font-size: 1.125rem;
        padding: 0.5rem 0;
    }

    .hamburger {
        display: flex;
    }

    .logo {
        height: 40px;
    }

    .nav-container {
        min-height: 70px;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .phone-mockup {
        width: 250px;
        height: 400px;
    }

    .phone-mockup i {
        font-size: 6rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .contact-form-wrapper {
        padding: 2rem;
    }

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

@media (max-width: 640px) {
    :root {
        --container-padding: 1rem;
        --section-padding: 3rem 0;
    }

    .logo {
        height: 28px;
        max-width: 180px;
    }

    .footer-logo {
        height: 32px;
    }

    .nav-container {
        padding: 0.75rem var(--container-padding);
        min-height: 60px;
        justify-content: space-between;
        gap: 0.5rem;
    }

    .nav-brand {
        justify-content: flex-start;
        flex: 0 1 auto;
        min-width: 0;
    }

    .nav-actions {
        gap: 0.5rem;
        flex-shrink: 0;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
    }

    .hamburger {
        padding: 3px;
    }

    .hamburger span {
        width: 22px;
        height: 2.5px;
    }

    .hero {
        min-height: auto;
        padding: 6rem 0 4rem;
    }

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

    .service-card {
        padding: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .section-header {
        margin-bottom: 3rem;
    }
}

/* Extra small devices (very small phones) */
@media (max-width: 375px) {
    .logo {
        height: 24px;
        max-width: 150px;
    }

    .nav-container {
        padding: 0.5rem var(--container-padding);
        min-height: 55px;
    }

    .theme-toggle {
        width: 32px;
        height: 32px;
    }

    .theme-toggle i {
        font-size: 0.9rem;
    }

    .hamburger span {
        width: 20px;
    }
}

/* ==================== UTILITIES ==================== */
.text-center {
    text-align: center;
}

.hidden {
    display: none !important;
}

.no-scroll {
    overflow: hidden;
}