/* ===================================
   Font Definitions
   =================================== */

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300;
    font-display: swap;
    src: url('fonts/Inter-Light.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('fonts/Inter-Regular.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('fonts/Inter-SemiBold.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('fonts/Inter-Bold.woff2') format('woff2');
}

/* ===================================
   CSS Reset & Base Styles
   =================================== */

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

:root {
    /* Color Palette */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-secondary: #8b5cf6;
    --color-accent: #ec4899;

    --color-text-primary: #1f2937;
    --color-text-secondary: #6b7280;
    --color-text-light: #9ca3af;

    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f9fafb;
    --color-bg-dark: #111827;

    --color-border: #e5e7eb;
    --color-success: #10b981;
    --color-error: #ef4444;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-size-base: 16px;
    --font-size-small: 0.875rem;
    --font-size-large: 1.125rem;

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 8px;
    --border-radius-large: 16px;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* ===================================
   Utility Classes
   =================================== */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    padding-bottom: var(--spacing-md);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 2px;
}

/* ===================================
   Buttons
   =================================== */

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

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

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

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

.btn-small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-small);
}

/* ===================================
   Navigation
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.logo:hover {
    color: var(--color-primary-dark);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    gap: 5px;
}

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

/* ===================================
   Hero Section
   =================================== */

.hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: skewY(-6deg);
    transform-origin: top left;
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 1;
    padding: var(--spacing-2xl) var(--spacing-md);
}

.hero-title {
    color: white;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-cta .btn {
    min-width: 160px;
}

.hero-cta .btn-primary {
    background-color: white;
    color: var(--color-primary);
    border-color: white;
}

.hero-cta .btn-primary:hover {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-bg-secondary);
}

.hero-cta .btn-secondary {
    border-color: white;
    color: white;
}

.hero-cta .btn-secondary:hover {
    background-color: white;
    color: var(--color-primary);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 25px;
    display: flex;
    justify-content: center;
    padding-top: 10px;
}

.scroll-indicator span {
    width: 6px;
    height: 6px;
    background-color: white;
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(20px); }
}

/* ===================================
   About Section
   =================================== */

.about {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-primary);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    text-align: center;
    font-size: var(--font-size-large);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius-large);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

/* ===================================
   Apps Section
   =================================== */

.apps {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-secondary);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.app-card {
    background-color: white;
    border-radius: var(--border-radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.app-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.app-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.app-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

/* Only apply hover scale to non-carousel images */
.app-card:hover .app-image:not(.app-carousel) img {
    transform: scale(1.05);
}

/* App Carousel Styles - Enhanced */
.app-carousel {
    position: relative;
    height: 500px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    overflow: hidden;
}

/* Animated background pattern */
.app-carousel::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 30px 30px;
    animation: moveBackground 20s linear infinite;
    opacity: 0.3;
}

@keyframes moveBackground {
    0% { transform: translate(0, 0); }
    100% { transform: translate(30px, 30px); }
}

.carousel-container {
    width: 100%;
    max-width: 320px;
    height: 100%;
    max-height: 450px;
    position: relative;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

/* Phone mockup frame effect */
.carousel-container::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: calc(100% + 24px);
    height: calc(100% + 24px);
    background: linear-gradient(145deg, rgba(255,255,255,0.2), rgba(255,255,255,0.05));
    border-radius: 40px;
    box-shadow:
        0 20px 60px rgba(0,0,0,0.3),
        inset 0 0 0 1px rgba(255,255,255,0.2);
    z-index: -1;
    pointer-events: none;
}

.carousel-image {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    opacity: 0;
    transition: opacity var(--transition-slow), transform var(--transition-slow);
    pointer-events: none;
    border-radius: 30px;
    box-shadow:
        0 10px 40px rgba(0,0,0,0.2),
        0 2px 8px rgba(0,0,0,0.15);
}

.carousel-image.active {
    opacity: 1;
    pointer-events: auto;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.5);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    font-size: 22px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    color: var(--color-primary);
}

.carousel-btn:hover {
    background: white;
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
    transform: translateY(-50%) scale(1.15);
    border-color: var(--color-primary);
}

.carousel-btn:active {
    transform: translateY(-50%) scale(1.05);
}

.carousel-prev {
    left: 15px;
}

.carousel-next {
    right: 15px;
}

.carousel-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 20px;
}

.carousel-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.carousel-dots .dot:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.1);
}

.carousel-dots .dot.active {
    background: white;
    border-color: var(--color-primary);
    transform: scale(1.3);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.8);
}

/* Screenshot counter badge */
.app-carousel::after {
    content: attr(data-carousel);
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 5;
}

.app-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.app-title {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.app-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.app-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.feature-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-bg-secondary);
    color: var(--color-primary);
    border-radius: var(--border-radius);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-semibold);
}

/* ===================================
   Contact Section
   =================================== */

.contact {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-2xl);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3 {
    margin-bottom: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-large);
}

.contact-icon {
    font-size: 1.5rem;
}

.contact-description {
    color: var(--color-text-secondary);
    margin-top: var(--spacing-lg);
}

/* ===================================
   Form Styles
   =================================== */

.contact-form {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

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

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

.error-message {
    display: block;
    color: var(--color-error);
    font-size: var(--font-size-small);
    margin-top: var(--spacing-xs);
    min-height: 1.2em;
}

.checkbox-group {
    margin-top: var(--spacing-lg);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: var(--font-weight-normal);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 4px;
    cursor: pointer;
}

.form-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: var(--font-weight-semibold);
    display: none;
}

.form-status.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    display: block;
}

.form-status.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
    display: block;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background-color: var(--color-bg-dark);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    margin-bottom: var(--spacing-md);
    color: white;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 975px) {
    .contact-content {
        grid-template-columns: 1fr;
    }

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

    .about-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background-color: white;
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transition: right var(--transition-base);
    }

    .nav-menu.active {
        right: 0;
    }

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

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

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

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }

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

@media (max-width: 575px) {
    :root {
        --font-size-base: 14px;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        min-height: 80vh;
    }

    .contact-form {
        padding: var(--spacing-md);
    }

    .app-image {
        height: 200px;
    }

    /* Carousel responsive adjustments */
    .app-carousel {
        height: 380px;
        padding: var(--spacing-sm);
    }

    .carousel-container {
        max-width: 260px;
        max-height: 350px;
    }

    .carousel-btn {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }

    .carousel-prev {
        left: 8px;
    }

    .carousel-next {
        right: 8px;
    }

    .carousel-dots {
        padding: 6px 12px;
        gap: 8px;
    }

    .carousel-dots .dot {
        width: 10px;
        height: 10px;
    }

    .app-carousel::after {
        top: 10px;
        right: 10px;
        font-size: 10px;
        padding: 4px 10px;
    }
}

/* ===================================
   Accessibility
   =================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===================================
   Print Styles
   =================================== */

@media print {
    .navbar,
    .hero-cta,
    .scroll-indicator,
    .contact-form,
    .footer {
        display: none;
    }

    body {
        font-size: 12pt;
    }

    a {
        text-decoration: underline;
    }
}