/* ==========================================================================
   DESIGN TOKENS & SYSTEM VARIABLES
   ========================================================================== */
:root {
    /* Color Palette */
    --color-bg-base: #0a0a0f;
    --color-bg-surface: #12121c;
    --color-bg-surface-glow: #1a1a2e;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.16);
    
    --color-primary: #7c4dff;
    --color-primary-glow: rgba(124, 77, 255, 0.3);
    --color-secondary: #00e5ff;
    --color-secondary-glow: rgba(0, 229, 255, 0.2);
    --color-accent-orange: #ff9100;
    --color-accent-orange-glow: rgba(255, 145, 0, 0.25);
    --color-accent-purple: #d500f9;
    
    --color-text-primary: #f5f5f7;
    --color-text-secondary: #8e8e93;
    --color-text-muted: #6e6e73;

    /* Spacing & Layout */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    --container-max-width: 1200px;
    --border-radius: 12px;
    --border-radius-lg: 24px;
    
    /* Typography */
    --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;
    --font-mono: 'SFMono-Regular', Consolas, "Liberation Mono", Menlo, Courier, monospace;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   RESET & LAYOUT FOUNDATIONS
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    background-color: var(--color-bg-base);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-inline: auto;
    padding-inline: var(--spacing-md);
}

/* Typography elements */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

a:hover {
    color: var(--color-primary);
}

/* ==========================================================================
   BUTTONS & ACTIONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 10px 20px;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-smooth);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #512da8);
    color: #fff;
    box-shadow: 0 4px 20px var(--color-primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(124, 77, 255, 0.5);
    background: linear-gradient(135deg, #8c62ff, #5e35b1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border);
    color: var(--color-text-primary);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-border-hover);
}

.btn-outline {
    background: transparent;
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: var(--color-secondary);
    color: var(--color-secondary);
    box-shadow: 0 4px 15px var(--color-secondary-glow);
}

.btn-large {
    padding: 14px 28px;
    font-size: 1.05rem;
    border-radius: 10px;
}

/* ==========================================================================
   APP HEADER
   ========================================================================== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-fast);
}

.header-container {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-primary);
    font-weight: 800;
    font-family: var(--font-heading);
    font-size: 1.25rem;
}

.logo-icon {
    color: var(--color-secondary);
}

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

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

.nav-links a:not(.btn) {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.nav-links a:not(.btn):hover {
    color: var(--color-text-primary);
}

/* ==========================================================================
   APP MAIN & LANDING SECTIONS
   ========================================================================== */
.app-main {
    padding-top: 72px;
    flex: 1;
}

/* Common Section Header */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary), var(--color-secondary));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 8s linear infinite;
}

/* Keyframes for text gradient shift */
@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ==========================================================================
   HERO SECTION & MOCKUP
   ========================================================================== */
.hero-section {
    position: relative;
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-xl);
    overflow: hidden;
}

.glow-container {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -20%);
    width: 100%;
    max-width: 1400px;
    height: 600px;
    pointer-events: none;
    z-index: 0;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(160px);
    opacity: 0.15;
    transition: var(--transition-smooth);
}

.glow-orb.orange {
    background: var(--color-accent-orange);
    width: 450px;
    height: 450px;
    top: 10%;
    left: 15%;
    animation: float-orb-1 25s ease-in-out infinite alternate;
}

.glow-orb.blue {
    background: var(--color-secondary);
    width: 500px;
    height: 500px;
    top: 5%;
    right: 15%;
    animation: float-orb-2 30s ease-in-out infinite alternate;
}

.glow-orb.purple {
    background: var(--color-primary);
    width: 400px;
    height: 400px;
    bottom: 10%;
    left: 30%;
    animation: float-orb-3 22s ease-in-out infinite alternate;
}

/* Glow orb drift keyframes */
@keyframes float-orb-1 {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(40px, -30px) scale(1.1); }
    100% { transform: translate(-20px, 10px) scale(0.95); }
}

@keyframes float-orb-2 {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-50px, 40px) scale(0.9); }
    100% { transform: translate(30px, -20px) scale(1.15); }
}

@keyframes float-orb-3 {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(25px, 25px) scale(1.08); }
    100% { transform: translate(-40px, -15px) scale(0.92); }
}

.hero-container {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.badge {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--color-border);
    padding: 6px 16px;
    border-radius: 100px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    color: var(--color-text-secondary);
    font-size: clamp(1.05rem, 2vw, 1.3rem);
    max-width: 750px;
    margin-bottom: var(--spacing-md);
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: var(--spacing-lg);
}

/* Hero Mockup Window (Glassmorphic) */
.hero-mockup {
    width: 100%;
    max-width: 1000px;
    background: rgba(18, 18, 28, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(124, 77, 255, 0.1);
}

.mockup-header {
    background: rgba(255, 255, 255, 0.03);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
}

.mockup-dots {
    display: flex;
    gap: 6px;
    margin-right: var(--spacing-md);
}

.mockup-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
}

.mockup-dots span:nth-child(1) { background: #ff5f56; }
.mockup-dots span:nth-child(2) { background: #ffbd2e; }
.mockup-dots span:nth-child(3) { background: #27c93f; }

.mockup-title {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

.mockup-body {
    padding: var(--spacing-md);
}

.mockup-flex {
    display: flex;
    gap: var(--spacing-md);
    text-align: left;
}

@media (max-width: 768px) {
    .mockup-flex {
        flex-direction: column;
    }
}

.mockup-spec-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-md);
}

/* CSS Phone Frame Visual */
.visual-device {
    width: 200px;
    height: 380px;
    border: 6px solid #222;
    border-radius: 36px;
    background: #0d0d14;
    padding: 10px;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
}

.device-screen {
    width: 100%;
    height: 100%;
    border-radius: 28px;
    background: radial-gradient(circle at top right, #1b1035, #08080f);
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.device-notch {
    width: 60px;
    height: 18px;
    background: #222;
    border-radius: 0 0 12px 12px;
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
}

.visual-stat-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.visual-stat {
    display: flex;
    flex-direction: column;
}

.stat-lbl {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.stat-val {
    font-size: 1.15rem;
    font-weight: 800;
    font-family: var(--font-heading);
}

.mockup-code-preview {
    flex: 1.5;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 8px;
    padding: var(--spacing-md);
    overflow-x: auto;
    border: 1px solid var(--color-border);
}

.mockup-code-preview pre {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.5;
    color: #a9b7c6;
}

/* ==========================================================================
   KEY METRICS SECTION
   ========================================================================== */
.stats-section {
    background: rgba(255, 255, 255, 0.01);
    border-block: 1px solid var(--color-border);
    padding-block: var(--spacing-md);
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
    text-align: center;
}

.stat-number {
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 800;
    font-family: var(--font-heading);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

/* ==========================================================================
   PLAYGROUND SECTION (INTERACTIVE CODE CONSOLE)
   ========================================================================== */
.playground-section {
    padding-block: var(--spacing-lg);
}

.playground-layout {
    display: grid;
    grid-template-columns: 1fr 2.5fr;
    gap: var(--spacing-md);
    background: rgba(18, 18, 28, 0.4);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    backdrop-filter: blur(12px);
}

@media (max-width: 992px) {
    .playground-layout {
        grid-template-columns: 1fr;
    }
}

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

.playground-endpoints h3 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.endpoint-btn {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: left;
    width: 100%;
}

.endpoint-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border-hover);
}

.endpoint-btn.active {
    background: rgba(124, 77, 255, 0.08);
    border-color: var(--color-primary);
}

.method {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.75rem;
    padding: 3px 6px;
    border-radius: 4px;
}

.method.get {
    background: rgba(0, 229, 255, 0.1);
    color: var(--color-secondary);
}

.endpoint-btn .path {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-primary);
}

.playground-workspace {
    background: #0d0d14;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.workspace-header {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.tab-selectors {
    display: flex;
    gap: 8px;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    padding: 6px 12px;
    border-radius: 6px;
    font-weight: 600;
    font-family: var(--font-heading);
    cursor: pointer;
    transition: var(--transition-fast);
}

.tab-btn:hover {
    color: var(--color-text-primary);
}

.tab-btn.active {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-secondary);
}

.playground-key-link {
    font-size: 0.85rem;
    font-weight: 600;
}

.workspace-body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.code-editor, .json-response {
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-sm);
    overflow-x: auto;
}

.code-editor code, .json-response code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #e2e8f0;
}

.json-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 8px;
    margin-bottom: 12px;
}

.badge.success {
    background: rgba(39, 201, 63, 0.1);
    color: #27c93f;
    border: 1px solid rgba(39, 201, 63, 0.2);
    padding: 2px 6px;
    border-radius: 4px;
}

/* Expandable response code wrapper */
.expandable-code-wrapper {
    position: relative;
    max-height: 380px;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.expandable-code-wrapper.expanded {
    max-height: 20000px; /* Large enough to display full JSON and list arrays */
}

/* Gradient fade overlay at the bottom when collapsed */
.code-fade-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: linear-gradient(to bottom, transparent, rgba(10, 10, 15, 0.95));
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.expandable-code-wrapper.expanded .code-fade-overlay {
    opacity: 0;
}

/* Show More / Less button */
.btn-show-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    width: 100%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    padding: 8px var(--spacing-sm);
    margin-top: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-show-more:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text);
}

.btn-show-more svg {
    transition: transform 0.3s ease;
}

.expandable-code-wrapper.expanded + .btn-show-more svg {
    transform: rotate(180deg);
}

/* ==========================================================================
   FEATURES SECTION (GRID CARDS)
   ========================================================================== */
.features-section {
    padding-block: var(--spacing-lg);
    background: linear-gradient(180deg, var(--color-bg-base), rgba(18, 18, 28, 0.2), var(--color-bg-base));
}

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

.feature-card {
    background: rgba(18, 18, 28, 0.4);
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top left, rgba(124, 77, 255, 0.1), transparent 50%);
    opacity: 0;
    transition: var(--transition-smooth);
    pointer-events: none;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(124, 77, 255, 0.1);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: rgba(124, 77, 255, 0.1);
    border: 1px solid rgba(124, 77, 255, 0.2);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

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

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

/* ==========================================================================
   FAQ SECTION (DETAILS/SUMMARY OPTIMIZED)
   ========================================================================== */
.faq-section {
    padding-block: var(--spacing-lg);
}

.faq-container {
    max-width: 800px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: rgba(18, 18, 28, 0.4);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-item[open] {
    border-color: var(--color-secondary);
    box-shadow: 0 4px 20px var(--color-secondary-glow);
}

.faq-item summary {
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    list-style: none;
    position: relative;
    user-select: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

.faq-item[open] summary::after {
    content: '−';
    color: var(--color-secondary);
}

.faq-answer {
    padding: 0 var(--spacing-md) var(--spacing-sm);
    color: var(--color-text-secondary);
}

.faq-answer a {
    font-weight: 600;
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */
.cta-section {
    position: relative;
    padding-block: var(--spacing-xl);
    overflow: hidden;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.cta-container {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.cta-container h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.cta-container p {
    color: var(--color-text-secondary);
    font-size: 1.15rem;
    margin-bottom: var(--spacing-md);
}

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

@media (max-width: 576px) {
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* ==========================================================================
   APP FOOTER
   ========================================================================== */
.app-footer {
    background: #07070b;
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
    }
}

.footer-info {
    max-width: 350px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.footer-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.link-group h4 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.link-group a {
    display: block;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.link-group a:hover {
    color: var(--color-text-primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: var(--spacing-md);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.8rem;
}