/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #7c3aed;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: var(--spacing-8);
}

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

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

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 70px; /* Account for fixed navbar */
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    z-index: -2;
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(37, 99, 235, 0.9) 0%, rgba(124, 58, 237, 0.9) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.hero-text {
    color: var(--white);
}

.hero-title {
    margin-bottom: var(--spacing-6);
}

.title-main {
    display: block;
    font-size: var(--font-size-6xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-4);
    background: linear-gradient(45deg, var(--white) 0%, rgba(255, 255, 255, 0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-subtitle {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 400;
    opacity: 0.9;
    line-height: 1.4;
}

.hero-description {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-8);
    opacity: 0.9;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-6);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

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

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

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

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

.btn-icon {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

/* App Screenshot in Phone Style */
.app-screenshot {
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1000px;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: var(--white);
    border-radius: 30px;
    padding: 20px;
    box-shadow: var(--shadow-2xl);
    transform: rotateY(-15deg) rotateX(5deg);
    transition: transform 0.3s ease;
    position: relative;
    overflow: hidden;
}

.phone-mockup:hover {
    transform: rotateY(-10deg) rotateX(2deg);
}

.screenshot-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    display: block;
}

.screenshot-frame {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    pointer-events: none;
}

/* Features Section */
.features {
    padding: var(--spacing-24) 0;
    background: var(--gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

.section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-6);
}

.feature-icon svg {
    width: 30px;
    height: 30px;
    stroke: var(--white);
    stroke-width: 2;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

.feature-description {
    color: var(--gray-600);
    line-height: 1.6;
}

/* Screenshots Gallery Section */
.screenshots-gallery {
    padding: var(--spacing-24) 0;
    background: var(--white);
    position: relative;
    overflow: hidden;
}

.screenshots-gallery::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.02) 0%, rgba(124, 58, 237, 0.02) 100%);
    pointer-events: none;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-8);
    margin-top: var(--spacing-12);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.screenshot-card {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    background: var(--white);
    padding: 20px;
    max-width: 300px;
    margin: 0 auto;
}

.screenshot-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-2xl);
}

.screenshot-container {
    position: relative;
    width: 100%;
    height: 600px;
    background: var(--white);
    border-radius: 30px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.screenshot-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    transition: transform 0.4s ease;
}

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

.screenshot-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(37, 99, 235, 0.9) 0%,
        rgba(124, 58, 237, 0.9) 100%
    );
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.screenshot-card:hover .screenshot-overlay {
    opacity: 1;
}

.screenshot-info {
    text-align: center;
    color: var(--white);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.screenshot-card:hover .screenshot-info {
    transform: translateY(0);
}

.screenshot-info h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-2);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.screenshot-info p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Feature-specific hover effects */
.screenshot-card[data-feature="dashboard"]:hover {
    box-shadow: 0 25px 50px -12px rgba(37, 99, 235, 0.25);
}

.screenshot-card[data-feature="logging"]:hover {
    box-shadow: 0 25px 50px -12px rgba(16, 185, 129, 0.25);
}

.screenshot-card[data-feature="timeline"]:hover {
    box-shadow: 0 25px 50px -12px rgba(245, 158, 11, 0.25);
}

.screenshot-card[data-feature="patterns"]:hover {
    box-shadow: 0 25px 50px -12px rgba(124, 58, 237, 0.25);
}

.screenshot-card[data-feature="calendar"]:hover {
    box-shadow: 0 25px 50px -12px rgba(59, 130, 246, 0.25);
}

.screenshot-card[data-feature="export"]:hover {
    box-shadow: 0 25px 50px -12px rgba(239, 68, 68, 0.25);
}

/* About Section */
.about {
    padding: var(--spacing-24) 0;
    background: var(--gray-50);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.about-description {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.dedication {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    margin-top: var(--spacing-8);
    padding: var(--spacing-6);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
}

.ribbon-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.dedication-text {
    font-style: italic;
    color: var(--gray-700);
    font-weight: 500;
}

.stats-grid {
    display: grid;
    gap: var(--spacing-6);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-6);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-xl);
    color: var(--white);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-2);
}

.stat-label {
    font-size: var(--font-size-lg);
    font-weight: 500;
    opacity: 0.9;
}


/* Contact Section */
.contact {
    padding: var(--spacing-24) 0;
    background: var(--gray-50);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
}

.contact-description {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    margin-bottom: var(--spacing-8);
    line-height: 1.6;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    width: 24px;
    height: 24px;
    stroke: var(--primary-color);
    stroke-width: 2;
}

/* Form Styles */
.form {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: var(--spacing-6);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: border-color 0.3s ease;
}

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

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

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-12) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-6);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.footer-text {
    text-align: right;
}

.footer-text p {
    margin-bottom: var(--spacing-2);
    color: var(--gray-300);
}

.footer-dedication {
    font-style: italic;
    color: var(--gray-400);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-12);
        padding: var(--spacing-8) var(--spacing-4) var(--spacing-4);
    }
    
    .title-main {
        font-size: var(--font-size-4xl);
    }
    
    .hero-buttons {
        justify-content: center;
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-3);
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .phone-mockup {
        width: 240px;
        height: 480px;
        transform: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .feature-card {
        padding: var(--spacing-6);
    }
    
    .screenshots-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
        padding: 0 var(--spacing-4);
    }
    
    .screenshot-card {
        max-width: 280px;
        padding: 20px;
    }
    
    .screenshot-container {
        height: 520px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-8);
        padding: 0 var(--spacing-4);
    }
    
    .about-description {
        font-size: var(--font-size-base);
    }
    
    .stats-grid {
        gap: var(--spacing-4);
    }
    
    .stat-item {
        padding: var(--spacing-4);
    }
    
    .stat-number {
        font-size: var(--font-size-3xl);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
        padding: 0 var(--spacing-4);
    }
    
    .form {
        padding: var(--spacing-6);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-4);
        padding: 0 var(--spacing-4);
    }
    
    .footer-text {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-4);
    }
    
    .hero-content {
        padding: var(--spacing-6) var(--spacing-4) var(--spacing-4);
    }
    
    .title-main {
        font-size: var(--font-size-3xl);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-3);
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .screenshot-card {
        max-width: 260px;
        padding: 15px;
    }
    
    .screenshot-container {
        height: 480px;
    }
    
    .feature-card {
        padding: var(--spacing-5);
    }
    
    .form {
        padding: var(--spacing-5);
    }
    
    .stat-item {
        padding: var(--spacing-3);
    }
    
    .stat-number {
        font-size: var(--font-size-2xl);
    }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Focus states for accessibility */
.btn:focus,
.nav-link:focus,
.form-input:focus,
.form-textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}