/* ===================================
   CSS Variables & Base Styles
   =================================== */
:root {
    /* Colors - Pink Theme based on #d0378d */
    --primary: #d0378d;
    --primary-light: #e85aab;
    --primary-dark: #a82a70;
    --gradient: linear-gradient(135deg, #d0378d 0%, #e85aab 100%);

    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;

    --bg-primary: #FFFFFF;
    --bg-secondary: #FDF8FA;
    --bg-tertiary: #FCF0F5;

    --border: #F3E0E9;

    /* Spacing */
    --section-padding: 120px;
    --container-width: 1200px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

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

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    border-bottom-color: var(--border);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 18px;
    color: var(--text-primary);
}

.logo-image {
    height: 32px;
    width: auto;
    object-fit: contain;
}

div.nav-logo {
    cursor: default;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

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

.nav-cta {
    padding: 10px 20px;
    background: var(--gradient);
    color: white !important;
    border-radius: var(--radius-sm);
    font-weight: 500;
    border: none;
}

.nav-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 65px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    padding: 24px;
    flex-direction: column;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    z-index: 999;
}

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

.mobile-menu a {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 12px 0;
}

.mobile-cta {
    text-align: center;
    padding: 14px 24px !important;
    background: var(--gradient);
    color: white !important;
    border-radius: var(--radius-sm);
    border: none;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

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

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

.btn-large {
    padding: 18px 36px;
    font-size: 17px;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    padding: 140px 24px 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(180deg, #FDF5F9 0%, #FFFFFF 100%);
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    margin-bottom: 60px;
}

.hero-title {
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(18px, 3vw, 22px);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-image {
    width: 100%;
    max-width: 1000px;
    position: relative;
}

.device-group {
    position: relative;
    display: flex;
    justify-content: center;
}

.device-desktop {
    width: 100%;
    max-width: 800px;
}

.device-frame {
    background: #1F2937;
    border-radius: 12px;
    padding: 8px;
    box-shadow: var(--shadow-xl);
}

.device-frame img {
    border-radius: 8px;
    width: 100%;
}

.device-phone {
    position: absolute;
    right: -20px;
    bottom: -40px;
    width: 180px;
}

.phone-frame {
    background: #1F2937;
    border-radius: 28px;
    padding: 8px;
    box-shadow: var(--shadow-xl);
}

.phone-frame img {
    border-radius: 20px;
    width: 100%;
}

/* ===================================
   Features Overview
   =================================== */
.features {
    padding: var(--section-padding) 0;
    background: var(--bg-primary);
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition-normal);
}

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

.feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(208, 55, 141, 0.1) 0%, rgba(232, 90, 171, 0.1) 100%);
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    color: var(--primary);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===================================
   Feature Detail Sections
   =================================== */
.feature-detail {
    padding: var(--section-padding) 0;
    background: var(--bg-primary);
}

.feature-detail.alt {
    background: var(--bg-secondary);
}

.detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.detail-content.reverse {
    direction: rtl;
}

.detail-content.reverse>* {
    direction: ltr;
}

.feature-tag {
    display: inline-block;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(208, 55, 141, 0.1) 0%, rgba(232, 90, 171, 0.1) 100%);
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 20px;
    margin-bottom: 20px;
}

.detail-text h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    margin-bottom: 20px;
}

.feature-desc {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 16px;
    color: var(--text-primary);
}

.feature-list svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--primary);
}

/* Image Layouts */
.image-stack {
    position: relative;
}

.stack-back {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.image-stack .phone-mockup {
    position: absolute;
    right: -40px;
    bottom: -40px;
    width: 180px;
}

.image-stack .phone-mockup img {
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
    border: 8px solid #1F2937;
}

.image-stack .notify-phone {
    right: auto;
    left: -40px;
}

.single-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.dashboard-showcase {
    position: relative;
}

.dashboard-showcase>img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.dashboard-stats {
    display: flex;
    gap: 24px;
    margin-top: 24px;
    justify-content: center;
}

.stat {
    text-align: center;
    padding: 20px 32px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.stat-value {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ===================================
   CTA Section
   =================================== */
.cta-section {
    padding: var(--section-padding) 0;
    background: var(--gradient);
}

.cta-content {
    text-align: center;
    color: white;
}

.cta-content h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

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

.cta-section .btn-outline {
    border-color: white;
    color: white;
}

.cta-section .btn-outline:hover {
    background: white;
    color: var(--primary);
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: 32px;
    background: var(--text-primary);
    color: white;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-logo .logo-icon {
    color: white;
}

.footer-desc {
    color: var(--text-light);
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-column a {
    display: block;
    font-size: 14px;
    color: var(--text-light);
    padding: 8px 0;
    transition: var(--transition-fast);
}

.footer-column a:hover {
    color: white;
}

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

.footer-bottom p {
    font-size: 14px;
    color: var(--text-light);
}

/* ===================================
   Animations
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeIn 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

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

.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-reveal.delay-1 {
    transition-delay: 0.1s;
}

.scroll-reveal.delay-2 {
    transition-delay: 0.2s;
}

.scroll-reveal.delay-3 {
    transition-delay: 0.3s;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .detail-content {
        gap: 60px;
    }

    .device-phone {
        width: 140px;
        right: 0;
        bottom: -20px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 120px 24px 60px;
    }

    .hero-content {
        margin-bottom: 40px;
    }

    .device-group {
        flex-direction: column;
        align-items: center;
    }

    .device-phone {
        position: relative;
        right: auto;
        bottom: auto;
        margin-top: -40px;
        width: 160px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .feature-card {
        padding: 32px 24px;
    }

    .detail-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .detail-content.reverse {
        direction: ltr;
    }

    .detail-image {
        order: -1;
    }

    .image-stack .phone-mockup {
        right: 10px;
        bottom: -20px;
        width: 140px;
    }

    .image-stack .notify-phone {
        left: 10px;
    }

    .dashboard-stats {
        flex-wrap: wrap;
    }

    .stat {
        flex: 1;
        min-width: 100px;
        padding: 16px 20px;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .footer-links {
        gap: 40px;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .cta-buttons .btn {
        width: 100%;
    }

    .dashboard-stats {
        flex-direction: column;
    }

    .stat {
        width: 100%;
    }
}

/* ===================================
   QR Code Modal
   =================================== */
.qr-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.qr-modal.active {
    opacity: 1;
    visibility: visible;
}

.qr-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.qr-modal-content {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    padding: 48px;
    max-width: 400px;
    width: 100%;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
}

.qr-modal.active .qr-modal-content {
    transform: scale(1) translateY(0);
}

.qr-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-tertiary);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.qr-modal-close:hover {
    background: var(--border);
    transform: rotate(90deg);
}

.qr-modal-close svg {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

.qr-modal-body {
    text-align: center;
}

.qr-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--primary);
}

.qr-icon svg {
    width: 100%;
    height: 100%;
}

.qr-modal-body h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.qr-modal-body>p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.qr-image {
    width: 220px;
    height: 220px;
    margin: 0 auto 24px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border);
    overflow: hidden;
}

.qr-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.qr-tips {
    display: flex;
    justify-content: center;
    gap: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.qr-tips span {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Button reset for nav-cta */
button.nav-cta,
button.mobile-cta {
    font-family: inherit;
    cursor: pointer;
}

@media (max-width: 480px) {
    .qr-modal-content {
        padding: 32px 24px;
    }

    .qr-image {
        width: 180px;
        height: 180px;
    }

    .qr-tips {
        flex-direction: column;
        gap: 8px;
    }
}