@import url('https://fonts.googleapis.com/css2?family=Ubuntu:ital,wght@0,300;0,400;0,500;0,700;1,300;1,400;1,500;1,700&display=swap');

/* DayHub Modern Design System - Deep Azure */
:root {
    --primary: #014F86;
    --primary-light: #2A6F97;
    --primary-dark: #013A63;
    --secondary: #2C7DA0;
    --secondary-light: #468FAF;
    --secondary-dark: #014F86;
    --background: #F8FAFC;
    --surface: #FFFFFF;
    --surface-variant: #F1F5F9;
    --card: #FFFFFF;
    --on-primary: #FFFFFF;
    --on-secondary: #FFFFFF;
    --on-surface: #0F172A;
    --on-surface-variant: #64748B;
    --outline: #E2E8F0;
    --outline-variant: rgba(226, 232, 240, 0.5);
    --error: #EF4444;
    --warning: #F59E0B;
    --success: #38BDF8;
    --shadow: rgba(0, 0, 0, 0.05);
    --radius: 16px;
    --radius-small: 8px;
    --radius-large: 24px;
    --nav-height: 72px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Overrides */
[data-theme="dark"] {
    --background: #0B1121;
    --surface: #111827;
    --surface-variant: #1F2937;
    --card: #1F2937;
    --on-surface: #F9FAFB;
    --on-surface-variant: #9CA3AF;
    --outline: #374151;
    --outline-variant: rgba(55, 65, 81, 0.5);
    --shadow: rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Ubuntu', sans-serif;
    background-color: var(--background);
    color: var(--on-surface);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Layout */
.container {
    padding: 0 1.25rem;
    width: 100%;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .container {
        max-width: 720px;
    }

    :root {
        --nav-height: 72px;
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 960px;
    }
}

@media (min-width: 1280px) {
    .container {
        max-width: 1200px;
    }
}

/* Navigation */
.navbar {
    background-color: var(--card);
    box-shadow: 0 1px 3px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--nav-height);
    border-bottom: 1px solid var(--outline);
}

.nav-container {
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--primary);
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.nav-logo img {
    height: 44px;
    width: 44px;
    border-radius: var(--radius-small);
    object-fit: contain;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    order: 3;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--on-surface);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition);
}

.theme-toggle:hover {
    background-color: var(--surface-variant);
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: none;
}

.theme-toggle .icon-sun {
    display: none;
}

.nav-menu {
    display: none;
    list-style: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--card);
    padding: 1.5rem;
    flex-direction: column;
    gap: 1rem;
    border-bottom: 1px solid var(--outline);
    box-shadow: 0 4px 6px -1px var(--shadow);
}

.nav-menu.active {
    display: flex;
}

.nav-link {
    color: var(--on-surface-variant);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    transition: var(--transition);
}

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

.nav-toggle-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--on-surface);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 768px) {
    .nav-toggle-btn {
        display: none;
    }

    .nav-menu {
        position: static;
        display: flex;
        flex-direction: row;
        padding: 0;
        box-shadow: none;
        border: none;
        gap: 1.5rem;
        margin-left: auto;
    }

    .nav-actions {
        margin-left: 1rem;
    }
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--on-primary);
    padding: 3.5rem 1.25rem;
    text-align: center;
    border-radius: 0 0 var(--radius-large) var(--radius-large);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.25rem;
}

.hero p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-image {
    margin-top: 3rem;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
    filter: drop-shadow(0 20px 25px rgba(0, 0, 0, 0.2));
}

@media (min-width: 768px) {
    .hero {
        padding: 5rem 2rem;
    }

    .hero h1 {
        font-size: 3.5rem;
    }

    .hero p {
        font-size: 1.25rem;
    }

    .hero-image {
        max-width: 350px;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 48px;
    padding: 0 1.5rem;
    min-width: 140px;
    border-radius: var(--radius-small);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    font-size: 1rem;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--secondary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

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

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

.btn-outline {
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: white;
}

/* Sections */
.section {
    padding: 4rem 0;
}

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

.section-header h2 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

[data-theme="dark"] .section-header h2 {
    color: var(--secondary);
}

.section-header p {
    color: var(--on-surface-variant);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Features List */
.feature-grid {
    display: grid;
    gap: 1.5rem;
}

.feature-card {
    background-color: var(--card);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--outline);
    transition: var(--transition);
}

.feature-card:hover {
    box-shadow: 0 10px 15px -3px var(--shadow);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
    color: var(--primary);
}

[data-theme="dark"] .feature-card h3 {
    color: var(--secondary-light);
}

@media (min-width: 640px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .feature-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Screenshots Showcase */
.screenshot-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

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

.screenshot-item img {
    border-radius: var(--radius);
    box-shadow: 0 4px 6px var(--shadow);
    border: 1px solid var(--outline);
    transition: var(--transition);
    cursor: zoom-in;
}

.screenshot-item img:hover {
    transform: scale(1.02);
}

.screenshot-item p {
    margin-top: 1rem;
    font-weight: 500;
    color: var(--on-surface-variant);
}

/* Contact Form */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--card);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--outline);
    box-shadow: 0 4px 6px var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-small);
    border: 1px solid var(--outline);
    background-color: var(--surface-variant);
    color: var(--on-surface);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--surface);
    box-shadow: 0 0 0 3px rgba(1, 79, 134, 0.1);
}

/* Honeypot */
.hidden {
    display: none !important;
}

/* Footer */
footer {
    padding: 4rem 0 2rem;
    background-color: var(--surface-variant);
    border-top: 1px solid var(--outline);
    text-align: center;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

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

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

.copyright {
    font-size: 0.875rem;
    color: var(--on-surface-variant);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeIn 0.5s ease forwards;
}