/* ===== CSS VARIABLES ===== */
:root {
    /* Colors from Brightli brand */
    --primary-yellow: #FDB777;
    --primary-blue: #93C5FD;
    --light-blue: #DBEAFE;
    --soft-yellow: #FEF9C3;
    --white: #FFFFFF;
    --dark-text: #334155;
    --medium-text: #64748B;
    --light-gray: #F1F5F9;
    
    /* Accent colors from app */
    --purple: #A78BFA;
    --green: #86EFAC;
    --pink: #FDA4AF;
    --coral: #FCA5A5;
    
    /* Spacing - Reduced for tighter layout */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Container - Wider on desktop */
    --container-width: 1200px;
    --container-padding: 1.5rem;
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

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

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

/* ===== CONTAINER ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ===== 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 rgba(148, 197, 253, 0.2);
    z-index: 1000;
    padding: 0.875rem 0;
}

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

.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    color: var(--dark-text);
    font-weight: 500;
    transition: color 0.3s;
}

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

.btn-nav {
    background: var(--primary-yellow);
    color: var(--dark-text);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 3px;
    background: var(--dark-text);
    border-radius: 2px;
    transition: 0.3s;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary-yellow);
    color: var(--dark-text);
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    background: var(--light-blue);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

.btn-icon {
    font-size: 1.25rem;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--soft-yellow) 50%, var(--light-blue) 100%);
    padding-top: 80px;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    padding: var(--spacing-lg) 0;
}

.hero-text {
    z-index: 2;
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--dark-text);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--medium-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    z-index: 2;
}

.phone-mockup {
    max-width: 400px;
    margin: 0 auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
}

.hero-screenshot {
    width: 100%;
    border-radius: var(--radius-xl);
}

.hero-decoration {
    position: absolute;
    top: -10%;
    left: -5%;
    z-index: 1;
}

.sun-circle {
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-yellow), rgba(253, 183, 119, 0.3));
    opacity: 0.6;
}

/* ===== SECTION STYLES ===== */
section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-header.centered {
    text-align: center;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark-text);
    margin-bottom: var(--spacing-sm);
}

.section-description {
    font-size: 1.0625rem;
    color: var(--medium-text);
    max-width: 700px;
    margin: 0 auto;
}

/* ===== PROBLEM SECTION ===== */
.problem-section {
    background: var(--white);
}

.problem-section h2 {
    color: var(--dark-text);
}

/* ===== DIFFERENCE SECTION ===== */
.difference-section {
    background: var(--light-gray);
}

.loop-visual {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.loop-step {
    flex: 1;
    min-width: 150px;
    text-align: center;
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.loop-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.loop-icon i {
    width: 48px;
    height: 48px;
    stroke-width: 2;
}

.loop-step h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 0.5rem;
}

.loop-step p {
    font-size: 0.875rem;
    color: var(--medium-text);
}

.loop-arrow {
    font-size: 2rem;
    color: var(--primary-blue);
    font-weight: bold;
}

.difference-screenshot {
    max-width: 500px;
    margin: 0 auto;
}

.feature-image {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ===== FEATURES SECTION ===== */
.features-section {
    background: var(--white);
}

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

.feature-card {
    background: var(--light-gray);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-yellow);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon i {
    width: 48px;
    height: 48px;
    stroke-width: 2;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--medium-text);
    margin-bottom: var(--spacing-md);
}

.feature-screenshot {
    margin-top: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.feature-screenshot img {
    width: 100%;
}

/* ===== HOW IT WORKS ===== */
.how-it-works {
    background: linear-gradient(135deg, var(--light-blue), var(--soft-yellow));
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.step {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-md);
    align-items: start;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-yellow);
    color: var(--dark-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    flex-shrink: 0;
}

.step-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: var(--spacing-sm);
}

.step-content p {
    color: var(--medium-text);
    margin-bottom: var(--spacing-md);
}

.step-image {
    width: 100%;
    max-width: 300px;
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
}

/* ===== FEATURES SHOWCASE ===== */
.features-showcase {
    background: var(--white);
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.showcase-item {
    padding: var(--spacing-md);
    text-align: center;
    border-radius: var(--radius-md);
    background: var(--light-gray);
    transition: transform 0.3s;
}

.showcase-item:hover {
    transform: translateY(-5px);
}

.showcase-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.showcase-icon i {
    width: 40px;
    height: 40px;
    stroke-width: 2;
}

.showcase-item h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 0.5rem;
}

.showcase-item p {
    font-size: 0.875rem;
    color: var(--medium-text);
}

/* ===== TESTIMONIALS ===== */
.testimonials {
    background: var(--light-gray);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.testimonial-stars {
    color: var(--primary-yellow);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.testimonial-text {
    color: var(--dark-text);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--dark-text);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    color: var(--dark-text);
    font-weight: 600;
}

.author-info span {
    color: var(--medium-text);
    font-size: 0.875rem;
}

/* ===== FINAL CTA ===== */
.final-cta {
    position: relative;
    background: linear-gradient(135deg, var(--soft-yellow), var(--light-blue));
    text-align: center;
    padding: var(--spacing-xl) 0;
    overflow: hidden;
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta-content h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark-text);
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    font-size: 1.0625rem;
    color: var(--medium-text);
    margin-bottom: var(--spacing-md);
}

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

.cta-decoration {
    position: absolute;
    bottom: -10%;
    right: -5%;
    z-index: 1;
}

.cta-decoration .sun-circle {
    width: 300px;
    height: 300px;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--dark-text);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.footer-tagline {
    color: var(--medium-text);
    font-size: 0.875rem;
}

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

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--medium-text);
    transition: color 0.3s;
}

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

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary-blue);
    transform: translateY(-3px);
}

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .loop-visual {
        flex-direction: column;
    }
    
    .loop-arrow {
        transform: rotate(90deg);
    }
    
    .step {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .step-number {
        margin: 0 auto;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.3s;
        pointer-events: none;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translateY(10px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translateY(-10px);
    }
    
    .hero {
        min-height: auto;
        padding: 6rem 0 3rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 0.9375rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .section-description {
        font-size: 0.9375rem;
    }
    
    .btn {
        width: 100%;
        font-size: 0.9375rem;
    }
    
    section {
        padding: 3rem 0;
    }
}

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

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