/* CSS Custom Properties */
:root {
    --bg-light: #FAFAF5;
    --accent-beige: #F4EDDD;
    --text-dark: #26262B;
    --font-family: Georgia, 'Times New Roman', serif;
    --transition-speed: 0.3s;
    --section-padding: 6rem 2rem;
    --section-padding-mobile: 4rem 1.5rem;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: 1.5rem;
}

p {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: rgba(38, 38, 43, 0.8);
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed);
    padding: 1rem 0;
}

.navbar.scrolled {
    background-color: var(--bg-light);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.nav-download-btn {
    padding: 0.75rem 2rem;
    background-color: var(--text-dark);
    color: var(--bg-light);
    text-decoration: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-family);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid var(--text-dark);
    box-shadow: 0 4px 12px rgba(38, 38, 43, 0.15);
    display: inline-block;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.nav-download-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background-color: rgba(250, 250, 245, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

.nav-download-btn:hover {
    background-color: var(--text-dark);
    color: var(--bg-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(38, 38, 43, 0.25);
}

.nav-download-btn:active {
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(38, 38, 43, 0.2);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 1rem;
    transition: opacity var(--transition-speed);
    position: relative;
}

.nav-link:hover {
    opacity: 0.7;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--text-dark);
    transition: width var(--transition-speed);
}

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

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

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent-beige) 0%, transparent 50%);
    opacity: 0.3;
    z-index: -1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    margin-bottom: 2.5rem;
}

.underline-word {
    position: relative;
    display: inline-block;
}

.underline-word::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--accent-beige);
    animation: underlineGrow 1s ease-out 0.5s both;
}

@keyframes underlineGrow {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1rem;
    font-family: var(--font-family);
    transition: all var(--transition-speed);
    display: inline-block;
    border: 2px solid var(--text-dark);
}

.btn-primary {
    background-color: var(--text-dark);
    color: var(--bg-light);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--text-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-dark);
}

.btn-secondary:hover {
    background-color: var(--text-dark);
    color: var(--bg-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.hero-image {
    animation: fadeInRight 1s ease-out;
}

.app-mockup {
    width: 100%;
    max-width: 400px;
    height: auto;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border-left: 2px solid var(--text-dark);
    border-bottom: 2px solid var(--text-dark);
    transform: rotate(-45deg);
}

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

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

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

/* App Features Section */
.features-section {
    padding: var(--section-padding);
    background-color: var(--accent-beige);
    position: relative;
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
}

.features-heading {
    text-align: center;
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 4rem;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin: 0 auto;
}

.feature-card {
    background: white;
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--text-dark), var(--accent-beige));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.feature-card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--accent-beige), #E8DFC8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
    transition: all 0.4s ease;
}

.feature-card:hover .feature-card-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, var(--text-dark), #3E3E45);
    color: var(--bg-light);
}

.feature-card-icon svg {
    transition: all 0.3s ease;
}

.feature-card:hover .feature-card-icon svg {
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 600;
}

.feature-card p {
    font-size: 1rem;
    line-height: 1.6;
    color: rgba(38, 38, 43, 0.7);
}

/* Animation Classes */
.animate-fade-in {
    opacity: 0;
    transition: opacity 0.8s ease-out;
}

.animate-fade-in.visible {
    opacity: 1;
}

.animate-slide-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-slide-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Download Section */
.download-section {
    padding: var(--section-padding);
    background-color: var(--bg-light);
    text-align: center;
}

.download-container {
    max-width: 900px;
    margin: 0 auto;
}

.download-heading {
    text-align: center;
    margin: 0 auto 3rem;
}

.download-badges {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.download-badge {
    display: inline-block;
    transition: transform var(--transition-speed);
}

.download-badge:hover {
    transform: translateY(-3px);
}

.download-badge img {
    height: 60px;
    width: auto;
}

/* Footer */
.footer {
    background-color: var(--text-dark);
    color: var(--bg-light);
    padding: 3rem 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-logo .logo-text {
    color: var(--bg-light);
}

.footer-legal h4 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    opacity: 0.7;
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.footer-links a {
    color: var(--bg-light);
    text-decoration: none;
    transition: opacity var(--transition-speed);
}

.footer-links a:hover {
    opacity: 0.7;
}

.separator {
    opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container,
    .feature-container {
        gap: 3rem;
    }

    /* Hero Section Tablet */
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-image {
        order: 2;
    }

    .app-mockup {
        max-width: 350px;
        margin: 0 auto;
    }

    .cta-buttons {
        justify-content: center;
    }

}

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

    .nav-download-btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-light);
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-speed);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Hero Section Mobile */
    .hero {
        padding: 6rem 1.5rem 3rem;
    }

    .hero-content {
        order: 1;
    }

    .hero-image {
        order: 2;
    }

    .app-mockup {
        max-width: 300px;
    }

    /* Features Section Mobile */
    .features-section {
        padding: var(--section-padding-mobile);
    }

    .features-heading {
        margin-bottom: 3rem;
        font-size: clamp(1.75rem, 4vw, 2.5rem);
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .feature-card {
        padding: 2.5rem 1.5rem;
    }

    .feature-card-icon {
        width: 70px;
        height: 70px;
    }

    /* Download Section Mobile */
    .download-section {
        padding: var(--section-padding-mobile);
    }

    .download-heading {
        margin-bottom: 2rem;
    }

    .download-badges {
        gap: 1rem;
    }

    .download-badge img {
        height: 50px;
    }

    /* Footer Mobile */
    .footer-container {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1.5rem;
    }

    .nav-download-btn {
        padding: 0.5rem 1.2rem;
        font-size: 0.85rem;
    }

    .logo-text {
        font-size: 1.25rem;
    }

    .download-badge img {
        height: 45px;
    }
}

/* Stagger Animation Delays for Feature Cards */
.feature-card:nth-child(1) { transition-delay: 0.1s; }
.feature-card:nth-child(2) { transition-delay: 0.2s; }
.feature-card:nth-child(3) { transition-delay: 0.3s; }
.feature-card:nth-child(4) { transition-delay: 0.4s; }
.feature-card:nth-child(5) { transition-delay: 0.5s; }
.feature-card:nth-child(6) { transition-delay: 0.6s; }

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

/* Focus Styles */
a:focus,
button:focus {
    outline: 2px solid var(--text-dark);
    outline-offset: 4px;
}