/* ====================================
   ANIMATED WEBSITE STYLES
   Advanced animations and modern design
   ==================================== */

/* CSS Variables for theming */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --success-color: #4ecdc4;
    --warning-color: #ffe66d;
    --danger-color: #ff6b6b;
    --dark-color: #2c3e50;
    --light-color: #ffffff;
    --gray-color: #6c757d;
    --bg-color: #0f0f23;
    --text-color: #ffffff;
    --text-muted: #a0a0a0;
    
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    --gradient-success: linear-gradient(135deg, var(--success-color), var(--primary-color));
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
    
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --animation-duration: 0.6s;
}

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Heebo', sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ====================================
   LOADING SCREEN ANIMATIONS
   ==================================== */

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(45deg, #0f0f23, #1a1a3e, #2d2d5f);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-animation {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.pulse-ring {
    width: 120px;
    height: 120px;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    position: absolute;
    animation: pulse-ring 2s cubic-bezier(0.455, 0.03, 0.515, 0.955) infinite;
}

.pulse-ring.delay-1 {
    animation-delay: 0.3s;
}

.pulse-ring.delay-2 {
    animation-delay: 0.6s;
}

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

.loading-text {
    display: flex;
    gap: 0.5rem;
    margin-top: 150px;
}

.loading-letter {
    font-size: 1.5rem;
    font-weight: 600;
    animation: loading-bounce 1.4s ease-in-out infinite both;
}

.loading-letter:nth-child(1) { animation-delay: -0.32s; }
.loading-letter:nth-child(2) { animation-delay: -0.16s; }
.loading-letter:nth-child(3) { animation-delay: 0s; }
.loading-letter:nth-child(4) { animation-delay: 0.16s; }
.loading-letter:nth-child(5) { animation-delay: 0.32s; }

@keyframes loading-bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

/* ====================================
   FLOATING NAVIGATION
   ==================================== */

.floating-nav {
    position: fixed;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    padding: 0.5rem 2rem;
    z-index: 1000;
    transition: var(--transition);
}

.floating-nav.scrolled {
    background: rgba(15, 15, 35, 0.95);
    transform: translateX(-50%) translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-animation {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rotating-cube {
    animation: rotate-3d 4s linear infinite;
    color: var(--primary-color);
    font-size: 1.5rem;
}

@keyframes rotate-3d {
    0% { transform: rotateY(0deg) rotateX(0deg); }
    25% { transform: rotateY(90deg) rotateX(0deg); }
    50% { transform: rotateY(180deg) rotateX(90deg); }
    75% { transform: rotateY(270deg) rotateX(180deg); }
    100% { transform: rotateY(360deg) rotateX(360deg); }
}

.brand-text {
    font-weight: 700;
    font-size: 1.2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1rem;
    margin: 0;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 25px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left 0.3s ease;
    z-index: -1;
}

.nav-link:hover::before,
.nav-link.active::before {
    left: 0;
}

.nav-link:hover,
.nav-link.active {
    color: white;
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    transition: var(--transition);
}

/* ====================================
   HERO SECTION WITH ADVANCED ANIMATIONS
   ==================================== */

.hero-section {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    top: 60%;
    right: 10%;
    animation-delay: -5s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 20%;
    animation-delay: -10s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 30%;
    right: 30%;
    animation-delay: -15s;
}

.shape-5 {
    width: 250px;
    height: 250px;
    bottom: 40%;
    right: 40%;
    animation-delay: -20s;
}

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

.particle-system {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 4rem 0;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.title-line {
    display: flex;
    gap: 1rem;
    overflow: hidden;
}

.word-animation {
    display: inline-block;
    animation: slide-up 1s ease-out forwards;
    opacity: 0;
    transform: translateY(100px);
}

.word-animation.delay-1 { animation-delay: 0.2s; }
.word-animation.delay-2 { animation-delay: 0.4s; }
.word-animation.delay-3 { animation-delay: 0.6s; }

@keyframes slide-up {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 500px;
}

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

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

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

.btn-animated:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-animated::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transition: all 0.3s ease;
    transform: translate(-50%, -50%);
}

.btn-animated:hover::before {
    width: 300px;
    height: 300px;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.floating-device {
    position: relative;
    animation: device-float 6s ease-in-out infinite;
}

@keyframes device-float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

.device-mockup {
    width: 300px;
    height: 400px;
    background: linear-gradient(145deg, #2c3e50, #34495e);
    border-radius: 30px;
    padding: 20px;
    box-shadow: var(--shadow-xl);
    position: relative;
}

.device-mockup::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 5px;
    background: #555;
    border-radius: 3px;
}

.screen-content {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.animated-chart {
    display: flex;
    align-items: end;
    gap: 10px;
    height: 150px;
}

.chart-bar {
    width: 20px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 4px;
    height: var(--height, 50%);
    animation: chart-grow 2s ease-out var(--delay, 0s) infinite;
}

@keyframes chart-grow {
    0% {
        height: 0;
    }
    50% {
        height: var(--height);
    }
    100% {
        height: var(--height);
    }
}

.floating-icons {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.icon-orbit {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
}

.orbit-1 {
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    animation: orbit-1 8s linear infinite;
}

.orbit-2 {
    bottom: -30px;
    right: -30px;
    animation: orbit-2 10s linear infinite;
}

.orbit-3 {
    top: 50%;
    left: -30px;
    transform: translateY(-50%);
    animation: orbit-3 12s linear infinite;
}

@keyframes orbit-1 {
    0% { transform: translateX(-50%) rotate(0deg) translateY(-150px) rotate(0deg); }
    100% { transform: translateX(-50%) rotate(360deg) translateY(-150px) rotate(-360deg); }
}

@keyframes orbit-2 {
    0% { transform: rotate(0deg) translateY(-120px) rotate(0deg); }
    100% { transform: rotate(360deg) translateY(-120px) rotate(-360deg); }
}

@keyframes orbit-3 {
    0% { transform: translateY(-50%) rotate(0deg) translateX(-140px) rotate(0deg); }
    100% { transform: translateY(-50%) rotate(360deg) translateX(-140px) rotate(-360deg); }
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

.scroll-text {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.scroll-arrow {
    font-size: 1.2rem;
    color: var(--primary-color);
}

/* ====================================
   SYSTEMS SECTION WITH 3D CARDS
   ==================================== */

.systems-section {
    padding: 6rem 0;
    background: linear-gradient(180deg, var(--bg-color) 0%, #1a1a3e 100%);
}

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

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.title-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.system-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 2rem;
    height: 100%;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    transform-style: preserve-3d;
}

.system-card:hover {
    transform: translateY(-10px) rotateX(5deg);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, var(--primary-color), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    animation: rotate 4s linear infinite;
}

.system-card:hover .card-glow {
    opacity: 0.1;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.system-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
    color: white;
    animation: icon-pulse 3s ease-in-out infinite;
}

@keyframes icon-pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.7);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 20px rgba(102, 126, 234, 0);
    }
}

.system-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.system-subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

.feature-list {
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    animation: fade-in-up 0.6s ease-out;
}

.feature-item i {
    color: var(--success-color);
    font-size: 1.1rem;
}

.progress-demo {
    margin-bottom: 2rem;
}

.progress-item {
    margin-bottom: 1rem;
}

.progress-item span {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
}

.progress-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-success);
    border-radius: 4px;
    width: 0;
    transition: width 2s ease-out 0.5s;
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: progress-shine 2s ease-out 0.5s;
}

@keyframes progress-shine {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.card-footer {
    margin-top: auto;
}

.btn-system {
    width: 100%;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.card-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: particle-float 15s infinite linear;
}

.particle:nth-child(1) {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.particle:nth-child(2) {
    top: 80%;
    left: 80%;
    animation-delay: 5s;
}

.particle:nth-child(3) {
    top: 60%;
    left: 30%;
    animation-delay: 10s;
}

@keyframes particle-float {
    0% {
        transform: translateY(0px) rotate(0deg);
        opacity: 1;
    }
    50% {
        transform: translateY(-100px) rotate(180deg);
        opacity: 0.5;
    }
    100% {
        transform: translateY(0px) rotate(360deg);
        opacity: 1;
    }
}

/* AMH Card specific styles */
.amh-card {
    background: linear-gradient(145deg, rgba(102, 126, 234, 0.1), rgba(255, 255, 255, 0.05));
}

.amh-card .system-icon {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

/* MOSDOT Card specific styles */
.mosdot-card {
    background: linear-gradient(145deg, rgba(76, 201, 196, 0.1), rgba(255, 255, 255, 0.05));
}

.mosdot-card .system-icon {
    background: linear-gradient(135deg, #4ecdc4, #44a08d);
}

/* ====================================
   FEATURES SECTION WITH MORPHING
   ==================================== */

.features-section {
    padding: 6rem 0;
    position: relative;
    background: var(--bg-color);
}

.morphing-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.7;
}

.morphing-background svg {
    width: 100%;
    height: 100%;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.feature-icon-wrapper {
    position: relative;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    position: relative;
    z-index: 2;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    transform: rotateY(360deg);
}

.icon-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: ripple 2s infinite;
}

@keyframes ripple {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* ====================================
   CONTACT SECTION
   ==================================== */

.contact-section {
    padding: 6rem 0;
    background: linear-gradient(180deg, var(--bg-color) 0%, #2d2d5f 100%);
}

.contact-info {
    padding-right: 2rem;
}

.contact-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

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

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.contact-method:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(10px);
}

.method-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.method-content h4 {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.method-content p {
    color: var(--text-muted);
    margin: 0;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 2rem;
}

.form-group {
    margin-bottom: 2rem;
    position: relative;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.15);
}

.input-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.form-group input:focus + .input-line,
.form-group select:focus + .input-line,
.form-group textarea:focus + .input-line {
    width: 100%;
}

.btn-submit {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.btn-ripple {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    transform: scale(0);
    transition: transform 0.6s ease;
}

.btn-submit:active .btn-ripple {
    transform: scale(1);
}

/* ====================================
   FOOTER
   ==================================== */

.footer {
    background: linear-gradient(180deg, #2d2d5f 0%, #0f0f23 100%);
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

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

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

.footer-social {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.social-link {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
}

/* ====================================
   RESPONSIVE DESIGN
   ==================================== */

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .floating-nav {
        padding: 0.5rem 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .contact-info {
        padding-right: 0;
        margin-bottom: 3rem;
    }
    
    .footer-links {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .title-line {
        flex-direction: column;
        gap: 0;
    }
    
    .device-mockup {
        width: 250px;
        height: 350px;
    }
    
    .system-card {
        padding: 1.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
}

/* ====================================
   ANIMATION UTILITIES
   ==================================== */

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes scale-in {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Scroll animations trigger */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Progress bars animation trigger */
.progress-fill.animate {
    width: var(--width) !important;
}