/* ========================================
   BruxControl Landing Page Styles
   Colors from the iOS app
   ======================================== */

:root {
    /* Brand Colors - from Color+BruxControl.swift - MORE VIBRANT */
    --brux-primary: #3D9DB5;      /* Vibrant teal */
    --brux-secondary: #6EC5D9;    /* Bright light blue */
    --brux-accent: #1E4D5C;       /* Deep blue */
    --brux-background: #F0F7FA;   /* Soft blue-white */
    --brux-neutral: #7A8B94;      /* Cool grey */
    --brux-success: #4DC47D;      /* Vibrant green */
    --brux-warning: #F5A623;      /* Bright orange */
    --brux-purple: #9B7DA0;       /* Accent purple */

    /* Text Colors */
    --text-primary: #1A3A47;
    --text-secondary: #5A6D78;
    --text-light: #FFFFFF;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(44, 95, 114, 0.08);
    --shadow-md: 0 4px 20px rgba(44, 95, 114, 0.12);
    --shadow-lg: 0 8px 40px rgba(44, 95, 114, 0.15);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ========================================
   Reset & Base
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--brux-background);
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

/* ========================================
   Layout
   ======================================== */

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

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--brux-accent);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-family: inherit;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brux-primary) 0%, #2A7A8C 50%, var(--brux-accent) 100%);
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(61, 157, 181, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(61, 157, 181, 0.5);
    background: linear-gradient(135deg, #4AAFBF 0%, var(--brux-primary) 50%, #2A7A8C 100%);
}

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

.btn-secondary:hover {
    background: var(--brux-primary);
    color: var(--text-light);
}

.btn-white {
    background: white;
    color: var(--brux-accent);
    box-shadow: var(--shadow-md);
}

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

.btn .icon {
    width: 20px;
    height: 20px;
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--brux-accent);
}

.logo-img {
    width: 36px;
    height: 36px;
}

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

.nav-links a {
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--brux-accent);
    transition: var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    padding: 140px 0 100px;
    background: linear-gradient(135deg, #E8F6FA 0%, #D4EEF5 30%, #C5E8F2 60%, #B8E0ED 100%);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--brux-accent);
}

.hero-content .highlight {
    color: var(--brux-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

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

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--brux-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    z-index: 2;
    width: 280px;
    filter: drop-shadow(var(--shadow-lg));
}

.phone-mockup img {
    border-radius: 40px;
}

.watch-mockup {
    position: absolute;
    right: 0;
    bottom: 20px;
    width: 120px;
    z-index: 3;
    filter: drop-shadow(var(--shadow-md));
}

.watch-mockup img {
    border-radius: 30px;
}

.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
}

.hero-wave svg {
    display: block;
    width: 100%;
}

/* ========================================
   Features Section
   ======================================== */

.features {
    padding: var(--spacing-2xl) 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    border: 1px solid rgba(61, 157, 181, 0.1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--brux-primary), var(--brux-success), var(--brux-secondary));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(61, 157, 181, 0.15);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--brux-primary), var(--brux-secondary));
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    box-shadow: 0 8px 20px rgba(61, 157, 181, 0.25);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: white;
    stroke: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--brux-accent);
}

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

/* ========================================
   How it Works Section
   ======================================== */

.how-it-works {
    padding: var(--spacing-2xl) 0;
    background: var(--brux-background);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 700px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--brux-primary), var(--brux-accent));
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--brux-accent);
}

.step-content p {
    color: var(--text-secondary);
}

/* ========================================
   Watch Feature Section
   ======================================== */

.watch-feature {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--brux-accent), var(--brux-primary));
    color: white;
}

.watch-feature .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.watch-content h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.watch-content > p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

.watch-features-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.watch-features-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
}

.watch-features-list svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--brux-success);
}

.watch-image {
    display: flex;
    justify-content: center;
}

.watch-image img {
    max-width: 300px;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
}

/* ========================================
   Testimonials Section
   ======================================== */

.testimonials {
    padding: var(--spacing-2xl) 0;
    background: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.testimonial-card {
    padding: var(--spacing-lg);
    background: var(--brux-background);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(74, 144, 164, 0.1);
}

.testimonial-stars {
    color: var(--brux-warning);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 2px;
}

.testimonial-card p {
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

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

.author-name {
    font-weight: 600;
    color: var(--brux-accent);
}

.author-title {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ========================================
   Download Section
   ======================================== */

.download {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--brux-primary), var(--brux-accent));
    text-align: center;
    color: white;
}

.download-content h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.download-content > p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

.download-note {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    opacity: 0.7;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    background: var(--brux-accent);
    color: white;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand p {
    margin-top: var(--spacing-sm);
    opacity: 0.7;
}

.footer-logo {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
    opacity: 0.7;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-column a {
    opacity: 0.9;
    transition: opacity var(--transition-fast);
}

.footer-column a:hover {
    opacity: 1;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.6;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    .features-grid,
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero .container,
    .watch-feature .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-image {
        order: 0;
        margin-bottom: var(--spacing-lg);
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

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

    .hero-stats {
        justify-content: center;
    }

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

    .watch-features-list {
        align-items: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: white;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
    }

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

    .mobile-menu-btn {
        display: flex;
    }

    .hero-content h1 {
        font-size: 2.25rem;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }

    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .phone-mockup {
        width: 220px;
    }

    .watch-mockup {
        width: 90px;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
    }
}