/* ==========================================================================
   SmartAppLogic Design System (Apple-Style Light Design)
   ========================================================================== */

:root {
    /* Color Palette */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f5f5f7;
    --color-bg-tertiary: #fbfbfd;
    --color-text-primary: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-text-tertiary: #86868b;
    --color-accent: #0071e3;
    --color-accent-hover: #0077ed;
    --color-border: #d2d2d7;
    --color-shadow: rgba(0, 0, 0, 0.04);
    
    /* Layout Variables */
    --nav-height: 48px;
    --container-width: 1024px;
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-medium: 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-slow: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

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

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    line-height: 1.5;
    overflow-x: hidden;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
}
::-webkit-scrollbar-thumb {
    background: #d2d2d7;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #a1a1a6;
}

/* ==========================================================================
   Typography & Headers
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

/* ==========================================================================
   Reusable UI Components
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 980px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none !important;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: scale(1.02);
}

.btn-dark {
    background-color: var(--color-text-primary);
    color: #ffffff;
}

.btn-dark:hover {
    background-color: #323236;
    transform: scale(1.02);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-wide {
    width: 100%;
}

.btn-link {
    background: transparent;
    color: var(--color-accent);
    padding: 12px 0;
    font-size: 1.1rem;
    font-weight: 400;
}

.btn-link i {
    font-size: 0.85rem;
    margin-left: 4px;
    transition: transform var(--transition-fast);
}

.btn-link:hover i {
    transform: translateX(3px);
}

.icon-right {
    margin-left: 8px;
    font-size: 0.8rem;
}

/* Section Common Styles */
section {
    padding: 100px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-container {
    width: 100%;
    max-width: var(--container-width);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 15px;
    letter-spacing: -0.03em;
}

.section-desc {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

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

.global-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background-color: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    z-index: 1000;
    transition: background-color var(--transition-fast);
}

.nav-container {
    max-width: var(--container-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    color: var(--color-text-primary);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
    text-decoration: none !important;
}

.nav-logo .logo-icon {
    font-size: 1.25rem;
    margin-right: 8px;
    color: var(--color-text-primary);
}

.nav-logo .logo-text span {
    color: var(--color-accent);
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--color-text-primary);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
    text-decoration: none !important;
}

.nav-link:hover {
    opacity: 1;
    color: var(--color-text-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    width: 30px;
    height: 20px;
    position: relative;
    cursor: pointer;
    z-index: 1010;
}

.mobile-menu-toggle .bar {
    display: block;
    width: 18px;
    height: 1.5px;
    background-color: var(--color-text-primary);
    margin: 4px auto;
    transition: all var(--transition-medium);
}

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

.hero-section {
    min-height: 90vh;
    padding-top: calc(var(--nav-height) + 60px);
    background-color: var(--color-bg-tertiary);
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 780px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-tagline {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    margin-bottom: 15px;
}

.hero-title {
    font-size: 4.8rem;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.35rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-bottom: 40px;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 24px;
    align-items: center;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 30px;
    font-size: 1.5rem;
    color: var(--color-text-tertiary);
    animation: bounce 2s infinite;
}

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

/* ==========================================================================
   Metrics Section
   ========================================================================== */

.metrics-section {
    background-color: var(--color-bg-primary);
    padding: 80px 20px;
    border-bottom: 1px solid var(--color-border);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.metric-card {
    text-align: center;
    padding: 20px;
}

.metric-icon {
    font-size: 2.2rem;
    color: var(--color-text-primary);
    margin-bottom: 15px;
    opacity: 0.95;
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 5px;
    letter-spacing: -0.02em;
}

.metric-label {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: 10px;
    color: var(--color-text-primary);
}

.metric-description {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   Products Section (Apple Bento Style)
   ========================================================================== */

.products-section {
    background-color: var(--color-bg-secondary);
    padding: 100px 20px;
}

.products-container {
    width: 100%;
    max-width: var(--container-width);
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.product-banner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    background-color: var(--color-bg-primary);
    border-radius: 28px;
    overflow: hidden;
    box-shadow: 0 15px 45px var(--color-shadow);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.product-banner:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
}

.product-info {
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
}

.product-category {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-tertiary);
    margin-bottom: 10px;
}

.product-name {
    font-size: 2.4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 8px;
}

.product-tagline {
    font-size: 1.25rem;
    color: var(--color-text-primary);
    font-weight: 500;
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.product-description {
    font-size: 0.98rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 35px;
}

.product-links {
    display: flex;
    gap: 16px;
}

.product-visual {
    background-color: #fbfbfd;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    overflow: hidden;
    border-left: 1px solid rgba(0, 0, 0, 0.05);
}

.product-visual img {
    max-width: 90%;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    transition: transform var(--transition-slow);
}

.product-banner:hover .product-visual img {
    transform: scale(1.03);
}

/* Product Theming tweaks */
.product-tarot {
    background: radial-gradient(circle at top right, #fffaf4, #ffffff);
}

.product-password {
    background: radial-gradient(circle at top right, #f4f8ff, #ffffff);
}

/* ==========================================================================
   Services Section (Bento Grid Style)
   ========================================================================== */

.services-section {
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 20px;
}

.service-card {
    background-color: var(--color-bg-secondary);
    padding: 40px 30px;
    border-radius: 20px;
    transition: background-color var(--transition-fast);
}

.service-card:hover {
    background-color: #ebebeb;
}

.service-icon {
    font-size: 2rem;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.service-title {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.25;
}

.service-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   Privacy & Credibility Section
   ========================================================================== */

.privacy-section {
    background-color: var(--color-bg-tertiary);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.privacy-content {
    max-width: 750px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.privacy-icon {
    font-size: 3rem;
    color: #34c759; /* Apple green */
    margin-bottom: 25px;
}

.privacy-title {
    font-size: 3.2rem;
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: 20px;
}

.privacy-subtitle {
    font-size: 1.35rem;
    color: var(--color-text-secondary);
    margin-bottom: 50px;
    font-weight: 400;
}

.privacy-bullets {
    display: flex;
    gap: 40px;
    text-align: left;
}

.bullet-item {
    flex: 1;
}

.bullet-item h4 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.bullet-item h4 i {
    color: #34c759;
}

.bullet-item p {
    font-size: 0.92rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   Contact Form (Apple Aesthetic Inputs)
   ========================================================================== */

.contact-section {
    background-color: var(--color-bg-primary);
}

.contact-container {
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
}

.contact-header {
    text-align: center;
    margin-bottom: 50px;
}

.contact-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.contact-desc {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text-primary);
}

.form-group input, 
.form-group select, 
.form-group textarea {
    font-family: var(--font-body);
    font-size: 1rem;
    padding: 16px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    outline: none;
    transition: all var(--transition-fast);
}

.form-group input::placeholder, 
.form-group textarea::placeholder {
    color: var(--color-text-tertiary);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    border-color: var(--color-accent);
    background-color: var(--color-bg-primary);
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.15);
}

.form-group.invalid input,
.form-group.invalid textarea {
    border-color: #ff3b30; /* Apple red */
}

.form-group.invalid input:focus,
.form-group.invalid textarea:focus {
    box-shadow: 0 0 0 4px rgba(255, 59, 48, 0.15);
}

.error-msg {
    display: none;
    color: #ff3b30;
    font-size: 0.78rem;
    margin-top: 6px;
}

.form-group.invalid .error-msg {
    display: block;
}

.form-actions {
    margin-top: 15px;
}

.btn-icon {
    font-size: 0.85rem;
    margin-left: 8px;
}

/* Contact success styling */
.contact-success-toast {
    display: none;
    background-color: #f4faf5;
    border: 1px solid #34c759;
    border-radius: 16px;
    padding: 24px;
    margin-top: 30px;
    animation: slideUp 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.toast-content {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    text-align: left;
}

.toast-icon {
    font-size: 1.8rem;
    color: #34c759;
    margin-top: 2px;
}

.toast-content h4 {
    font-size: 1.1rem;
    color: #1d1d1f;
    margin-bottom: 4px;
}

.toast-content p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.global-footer {
    background-color: var(--color-bg-secondary);
    padding: 80px 20px 40px;
    border-top: 1px solid var(--color-border);
}

.footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr repeat(3, 0.6fr);
    gap: 50px;
    padding-bottom: 60px;
    border-bottom: 1px solid var(--color-border);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--color-text-primary);
    text-decoration: none !important;
}

.footer-logo i {
    color: var(--color-text-primary);
    margin-right: 4px;
}

.footer-brand-desc {
    font-size: 0.88rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col h4 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-primary);
    margin-bottom: 6px;
}

.footer-col a {
    color: var(--color-text-secondary);
    font-size: 0.82rem;
    text-decoration: none !important;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    max-width: var(--container-width);
    margin: 0 auto;
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 991px) {
    :root {
        --nav-height: 54px;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .product-banner {
        grid-template-columns: 1fr;
    }
    
    .product-info {
        padding: 40px;
    }
    
    .product-visual {
        border-left: none;
        border-top: 1px solid rgba(0, 0, 0, 0.05);
        padding: 40px 20px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .privacy-bullets {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    /* Mobile Menu Drawer style */
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        height: 0;
        background-color: var(--color-bg-primary);
        flex-direction: column;
        gap: 0;
        overflow: hidden;
        transition: height var(--transition-medium);
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-menu.active {
        height: calc(100vh - var(--nav-height));
    }
    
    .nav-link {
        font-size: 1.25rem;
        padding: 20px 30px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.03);
        width: 100%;
        display: block;
        opacity: 0.95;
    }
    
    .nav-actions .nav-cta-btn {
        display: none;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .hero-title {
        font-size: 2.6rem;
    }
    
    .hero-subtitle {
        font-size: 1.15rem;
    }
}

/* Nav Menu Mobile Open Animation */
.nav-menu.active + .nav-actions .mobile-menu-toggle .bar:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
}

.nav-menu.active + .nav-actions .mobile-menu-toggle .bar:nth-child(2) {
    transform: translateY(-1px) rotate(-45deg);
}