@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Outfit:wght@400;600;700;800&display=swap');

/* Global Vars & Reset */
:root {
    --bg-color: #f8f9fa;
    --text-color: #1a1a1a;
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #6b7280;
    --card-bg: #ffffff;
    --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --border-color: #f1f5f9;
    --nav-bg: rgba(255, 255, 255, 0.85);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --accent-glow: rgba(37, 99, 235, 0.1);
}

[data-theme="dark"] {
    --bg-color: #030712;
    --text-color: #f9fafb;
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --secondary-color: #9ca3af;
    --card-bg: #111827;
    --card-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    --border-color: #1f2937;
    --nav-bg: rgba(3, 7, 18, 0.85);
    --accent-glow: rgba(59, 130, 246, 0.15);
}

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

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    position: relative;
}

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

body.theme-initialized {
    transition: background-color 0.5s ease, color 0.5s ease;
}

img,
video,
canvas,
svg {
    max-width: 100%;
    height: auto;
}

h1,
h2,
h3,
h4,
h5,
h6,
p {
    overflow-wrap: break-word;
    word-wrap: break-word;
    hyphens: auto;
}


a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    transition: transform 0.3s ease-in-out;
}

.navbar-hidden {
    transform: translateY(-100%);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.nav-links {
    display: flex;
    gap: 15px;
    align-items: center;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    transition: var(--transition);
}

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

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    font-size: 1.2rem;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle .material-symbols-outlined {
    font-size: 1.5rem;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-color);
    padding: 5px;
    z-index: 1100;
}

/* Navigation Drawer */
.nav-drawer {
    position: fixed;
    top: 0;
    right: -160px;
    width: 160px;
    height: 100vh;
    background: var(--card-bg);
    z-index: 2000;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease-in-out;
    padding: 50px 10px 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-drawer.active {
    transform: translateX(-160px);
}

.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-in-out;
}

.drawer-overlay.active {
    opacity: 1;
    visibility: visible;
}

.drawer-links {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.drawer-links a {
    padding: 6px 10px;
    border-radius: 8px;
    font-weight: 500;
    color: var(--text-color);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}

.drawer-links a:hover {
    background: var(--border-color);
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 60px;
    /* Offset for fixed header */
    animation: fadeIn 1s ease-out;
}

.profile-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 24px;
    box-shadow: var(--card-shadow);
    border: 4px solid var(--card-bg);
}

.hero h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
    color: var(--text-color);
}

.hero h1.mission-statement {
    font-size: 1.5rem;
    font-weight: 20;
}

.hero-sub {
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 0 40px;
}

.hero-sub h1 {
    font-size: 2.5rem;
    font-weight: 800;
}


.hero p {
    font-size: 1.25rem;
    color: var(--secondary-color);
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

.btn-group {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
}

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

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

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

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

/* Apps Section */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.app-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.app-icon {
    width: 140px;
    height: 140px;
    background-color: var(--primary-color);
    border-radius: 24px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    color: white;
}

.platform-icon-img {
    width: 110px;
    height: 110px;
    object-fit: contain;
}


.app-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.app-desc {
    color: var(--secondary-color);
    font-size: 1rem;
    margin-bottom: 20px;
    flex-grow: 1;
    /* Pushes button down */
}

.tags {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.75rem;
    background-color: var(--border-color);
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 500;
}

.tags-container {
    display: flex;
    gap: 8px;
    margin-top: 20px;
    flex-wrap: wrap;
    justify-content: center;
}


/* Categories Section */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.category-card {
    background: var(--card-bg);
    padding: 30px;
    text-align: center;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.category-card:hover {
    border-color: var(--primary-color);
    transform: scale(1.02);
}

.cat-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 10px;
}

/* About & Footer */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    color: var(--secondary-color);
}

footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    margin-top: 60px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

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

/* Donation Buttons */
.donation-btn {
    display: block;
    width: 100%;
    padding: 16px 32px;
    border-radius: 8px;
    font-weight: bold;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.donation-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.donation-btn-outline {
    background-color: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-color);
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
}

.donation-btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* Notebook links */
.navbar-link {
    font-weight: 500;
    transition: var(--transition);
}

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

/* Notebooks Specific & Utilities */
.section-alt {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    padding: 6px 12px;
    background: var(--accent-glow);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}

.section-title {
    font-family: 'Outfit', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.section-subtitle {
    color: var(--secondary-color);
    max-width: 700px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 24px;
    display: block;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-description {
    color: var(--secondary-color);
    font-size: 0.95rem;
}

.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.mockup-container {
    background: var(--border-color);
    border-radius: 24px;
    padding: 20px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    position: relative;
    aspect-ratio: 9/19.5;
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mockup-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

.feature-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.feature-list-icon {
    color: var(--primary-color);
    font-weight: 700;
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.special-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.special-feature-card {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.special-feature-image {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
}

.pricing-section {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(180deg, transparent, var(--accent-glow));
}

.pricing-title {
    font-family: 'Outfit', sans-serif;
    font-size: 3rem;
    margin-bottom: 24px;
}

.pricing-description {
    max-width: 600px;
    margin: 0 auto 40px;
    color: var(--secondary-color);
}

/* Tablet Responsive */
@media (max-width: 1024px) {
    .two-column {
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        min-height: auto;
        justify-content: flex-start;
        align-items: flex-start;
        padding-top: 100px;
        padding-bottom: 20px;
    }

    .hero h1 {
        font-size: 2rem;
        word-break: break-word;
    }

    .hero h1.mission-statement {
        font-size: 1.1rem;
    }

    .hero p {
        font-size: 0.95rem;
    }

    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .two-column {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .two-column-reverse>.column:first-child {
        order: 2;
    }

    .pricing-title {
        font-size: 2rem;
    }

    .special-feature-card {
        padding: 16px;
        gap: 15px;
    }

    .special-feature-image {
        width: 48px;
        height: 48px;
    }

    .section {
        padding: 40px 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .hero-sub {
        min-height: 200px;
        padding: 80px 0 30px;
    }

    .hero-sub h1 {
        font-size: 1.75rem;
    }
}

/* Landscape compact layout */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        justify-content: flex-start;
        align-items: flex-start;
        padding-top: 80px;
        padding-bottom: 20px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .profile-img {
        width: 80px;
        height: 80px;
        margin-bottom: 15px;
    }
}