/* --- Sophisticated Typography Imports (Using Native Google Fonts) --- */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital,wght@0,400;1,400&family=Plus+Jakarta+Sans:wght@300;400;500;600&family=Space+Grotesk:wght@500;700&family=Space+Mono:ital,wght@0,400;0,700&display=swap');

/* --- High-end Editorial Color & Design Config --- */
:root {
    --color-black: #0F0F11;         /* True Matte Charcoal */
    --color-gray-dark: #4A4A4F;     /* Muted Premium Gray */
    --color-gray-light: #F4F3EF;    /* Warm Alabaster White */
    --color-border: rgba(15, 15, 17, 0.05); /* Extremely delicate separator */

    /* Luxury Desaturated Muted Pastel Accents */
    --color-accent-sage: #8DAA9D;   /* Muted Sage Green from Vases App */
    --color-accent-sand: #D5C7B6;   /* Luxurious Sand from Squarespace */
    --color-accent-iris: #A5A5C7;   /* Classy Pearl Iris Lavender */

    --bg-canvas: #FAF9F6;           /* Chalky warm chalk-white */
    --bg-card: #FFFFFF;             /* Crisp Premium Paper White */

    /* Four complementary premium typefaces */
    --font-serif: 'Instrument Serif', serif;
    --font-sans-title: 'Space Grotesk', sans-serif;
    --font-sans-body: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'Space Mono', monospace;

    --transition-elegant: all 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Base Resets & Global Styles --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans-body);
    background-color: var(--bg-canvas);
    color: var(--color-black);
    line-height: 1.6;
    letter-spacing: -0.01em;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* --- Flowing Streamer & Reveal Animations --- */
@keyframes gemini-gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(35px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Gemini APP style Flowing Gradient Classes --- */
.gemini-gradient-text {
    background: linear-gradient(90deg, #8DAA9D, #A5A5C7, #D5C7B6, #8DAA9D);
    background-size: 300% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gemini-gradient 8s linear infinite;
}

/* Fluid floating aura container behind components */
.gemini-ambient-aura {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 250px;
    height: 250px;
    background: linear-gradient(45deg, rgba(141, 170, 157, 0.12), rgba(165, 165, 199, 0.1), rgba(213, 199, 182, 0.15));
    background-size: 200% 200%;
    filter: blur(60px);
    border-radius: 50%;
    z-index: -1;
    pointer-events: none;
    animation: gemini-gradient 10s ease infinite;
}

/* Pearlescent ambient background wrapper */
.pearl-streamer-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    background:
            radial-gradient(circle at 10% 15%, rgba(141, 170, 157, 0.08) 0%, transparent 45%),
            radial-gradient(circle at 90% 85%, rgba(213, 199, 182, 0.12) 0%, transparent 45%),
            radial-gradient(circle at 50% 50%, rgba(165, 165, 199, 0.05) 0%, transparent 60%);
    filter: blur(30px);
}

/* --- Scroll Reveal Mechanism --- */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: var(--transition-elegant);
}

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

.delay-100 { transition-delay: 0.15s; }
.delay-200 { transition-delay: 0.3s; }
.delay-300 { transition-delay: 0.45s; }

/* --- Layout Structure --- */
.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Floating Capsule Header & Bespoke Custom Language Selector --- */
.navbar {
    position: sticky;
    top: 16px;
    background-color: rgba(250, 249, 246, 0.75);
    backdrop-filter: blur(24px);
    z-index: 100;
    height: 80px;
    display: flex;
    align-items: center;
    transition: var(--transition-elegant);
    border-bottom: 1px solid rgba(15, 15, 17, 0.03);
    margin-bottom: 24px;
}

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

.brand {
    font-family: var(--font-sans-title);
    font-size: 19px;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--color-black);
}

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

.nav-links a {
    font-family: var(--font-sans-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-dark);
    position: relative;
    transition: var(--transition-elegant);
}

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

.nav-links a::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background-color: var(--color-black);
    transition: var(--transition-elegant);
}

.nav-links a:hover::after {
    width: 100%;
}

/* --- Elegant Custom Language Dropdown (Beautified Selector) --- */
.lang-dropdown-container {
    position: relative;
    display: inline-block;
}

.lang-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background-color: var(--bg-card);
    border: 1px solid rgba(15, 15, 17, 0.08);
    border-radius: 40px;
    font-family: var(--font-sans-body);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-black);
    cursor: pointer;
    outline: none;
    transition: var(--transition-fast);
}

.lang-dropdown-btn:hover {
    border-color: var(--color-black);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
}

.lang-dropdown-btn .chevron {
    font-size: 8px;
    font-family: var(--font-mono);
    color: var(--color-gray-dark);
    transition: var(--transition-fast);
}

/* Rotate indicator chevron when selector active */
.lang-dropdown-container.active .chevron {
    transform: rotate(180deg);
}

/* Fluid scale & fade entrance menu */
.lang-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background-color: var(--bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    box-shadow: 0 16px 32px rgba(15, 15, 17, 0.05);
    list-style: none;
    padding: 8px;
    min-width: 140px;
    opacity: 0;
    transform: translateY(15px) scale(0.95);
    pointer-events: none;
    transition: var(--transition-fast);
    z-index: 1000;
}

.lang-dropdown-container.active .lang-dropdown-menu {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.lang-dropdown-item {
    padding: 8px 14px;
    font-family: var(--font-sans-body);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-gray-dark);
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.lang-dropdown-item:hover {
    background-color: var(--color-gray-light);
    color: var(--color-black);
}

/* --- Organic Capsule Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 30px;
    font-family: var(--font-sans-body);
    font-size: 14px;
    font-weight: 500;
    border-radius: 40px;
    cursor: pointer;
    border: 1px solid rgba(15, 15, 17, 0.12);
    background-color: transparent;
    color: var(--color-black);
    transition: var(--transition-elegant);
}

.btn-primary {
    background-color: var(--color-black);
    color: #FFFFFF;
    border-color: var(--color-black);
}

.btn-primary:hover {
    background-color: var(--color-accent-sage);
    border-color: var(--color-accent-sage);
    color: var(--color-black);
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(141, 170, 157, 0.2);
}

.btn-secondary {
    background-color: var(--bg-card);
    border-color: var(--color-border);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.01);
}

.btn-secondary:hover {
    background-color: var(--color-gray-light);
    transform: translateY(-2px);
}

.btn-outline {
    border-color: rgba(15, 15, 17, 0.1);
}

.btn-outline:hover {
    border-color: var(--color-black);
    background-color: rgba(0, 0, 0, 0.01);
}

/* --- Hero Section --- */
.hero {
    padding: 120px 0 160px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.badge {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-mono);
    background-color: var(--color-gray-light);
    color: var(--color-gray-dark);
    padding: 6px 14px;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 30px;
    margin-bottom: 32px;
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: clamp(52px, 8vw, 88px);
    font-weight: 400;
    line-height: 1.05;
    color: var(--color-black);
    margin-bottom: 32px;
    max-width: 980px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-family: var(--font-sans-body);
    font-size: clamp(16px, 1.8vw, 20px);
    color: var(--color-gray-dark);
    max-width: 620px;
    margin: 0 auto 48px auto;
    line-height: 1.6;
}

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

/* --- Highly Detailed Gallery Grid Section (Editorial Features) --- */
.features-section {
    padding: 140px 0;
    background-color: #FFFFFF;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 90px;
}

.section-header h2 {
    font-family: var(--font-serif);
    font-size: clamp(38px, 5vw, 56px);
    font-weight: 400;
    margin-bottom: 20px;
}

.section-header p {
    font-family: var(--font-sans-body);
    font-size: 16px;
    color: var(--color-gray-dark);
    max-width: 520px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

/* Features Detailed Card */
.feature-card {
    position: relative;
    background-color: var(--bg-canvas);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    padding: 44px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 480px; /* Taller card container to support vector illustrations */
    transition: var(--transition-elegant);
    overflow: hidden;
    z-index: 1;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.02);
    border-color: rgba(15, 15, 17, 0.1);
}

.card-num {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-accent-sage);
    margin-bottom: 16px;
    display: block;
    font-weight: 700;
}

.card-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 400;
    margin-bottom: 12px;
    line-height: 1.2;
}

.card-desc {
    font-family: var(--font-sans-body);
    font-size: 13px;
    color: var(--color-gray-dark);
    line-height: 1.6;
    margin-bottom: 24px;
}

/* Vector Illustration Container inside feature cards (Fills visual gaps) */
.feature-mockup {
    width: 100%;
    height: 130px;
    background-color: #FFFFFF;
    border: 1px solid rgba(15, 15, 17, 0.04);
    border-radius: 12px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.01);
}

/* Inner elements for mockups */
.mock-web-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background-color: var(--color-gray-light);
    border-bottom: 1px solid rgba(15,15,17,0.03);
    display: flex;
    align-items: center;
    padding: 0 10px;
    gap: 4px;
}

.mock-web-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: rgba(15,15,17,0.2);
}

.mock-code-bubble {
    padding: 8px 14px;
    background-color: var(--color-gray-light);
    border-radius: 20px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--color-gray-dark);
    box-shadow: 0 4px 10px rgba(0,0,0,0.02);
}

/* Node layout representing servers/KV */
.mock-node-line {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mock-node {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 1px solid var(--color-accent-sage);
    background-color: var(--bg-card);
    position: relative;
}

.mock-node::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 100%;
    width: 16px;
    height: 1px;
    background-color: var(--color-border);
}

.mock-node:last-child::after {
    display: none;
}

/* Explicit technical workflow metadata details on card bottoms */
.card-details {
    border-top: 1px dashed rgba(15, 15, 17, 0.1);
    padding-top: 14px;
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 11px;
    color: rgba(15, 15, 17, 0.5);
}

/* --- Multi-page Common Header --- */
.page-header {
    padding: 100px 0 40px 0;
    text-align: center;
}

.page-header h1 {
    font-family: var(--font-serif);
    font-size: clamp(38px, 6vw, 62px);
    font-weight: 400;
}

/* --- Auth Card --- */
.auth-box {
    max-width: 440px;
    margin: 40px auto 100px auto;
    background-color: var(--bg-card);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    padding: 48px;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.015);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-family: var(--font-sans-body);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-gray-dark);
}

.form-control {
    width: 100%;
    padding: 14px 20px;
    font-family: var(--font-sans-body);
    font-size: 15px;
    background-color: var(--bg-canvas);
    border: 1px solid rgba(15, 15, 17, 0.08);
    border-radius: 12px;
    outline: none;
    transition: var(--transition-elegant);
}

.form-control:focus {
    border-color: var(--color-black);
    background-color: #FFFFFF;
}

/* --- Luxury Editor Workspace --- */
.workspace-box {
    border: 1px solid var(--color-border);
    border-radius: 24px;
    background-color: var(--bg-card);
    box-shadow: 0 50px 100px rgba(0, 0, 0, 0.025);
    overflow: hidden;
}

.workspace-bar {
    background-color: var(--bg-canvas);
    border-bottom: 1px solid var(--color-border);
    padding: 18px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.bar-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(15, 15, 17, 0.15);
}

.workspace-content {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    min-height: 520px;
}

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

.workspace-editor {
    padding: 48px;
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

@media (max-width: 992px) {
    .workspace-editor {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }
}

.prompt-area {
    width: 100%;
    height: 220px;
    border: 1px solid rgba(15, 15, 17, 0.1);
    border-radius: 16px;
    padding: 24px;
    font-family: var(--font-sans-body);
    font-size: 16px;
    resize: none;
    outline: none;
    background-color: var(--bg-canvas);
    transition: var(--transition-elegant);
}

.prompt-area:focus {
    border-color: var(--color-black);
    background-color: #FFFFFF;
}

.workspace-preview {
    background-color: var(--bg-canvas);
    padding: 48px;
    display: flex;
    flex-direction: column;
}

.preview-browser {
    flex-grow: 1;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    background-color: #FFFFFF;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.browser-header {
    height: 38px;
    background-color: var(--bg-canvas);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 20px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-gray-dark);
}

.browser-body {
    flex-grow: 1;
    position: relative;
}

.status-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-sans-body);
    font-weight: 500;
    font-size: 16px;
    color: var(--color-gray-dark);
}

/* --- Clean Deploy Console Layout --- */
.deploy-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    margin: 40px 0 100px 0;
}

@media (max-width: 768px) {
    .deploy-grid {
        grid-template-columns: 1fr;
    }
}

.deploy-card {
    background-color: var(--bg-card);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    padding: 48px;
    text-align: center;
}

.deploy-radar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    margin: 0 auto 32px auto;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.radar-sweep {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: rgba(141, 170, 157, 0.08);
    animation: fadeInUp 2s infinite ease-in-out alternate;
}

/* --- Footer --- */
.footer {
    background-color: var(--bg-canvas);
    color: var(--color-gray-dark);
    padding: 80px 0;
    border-top: 1px solid var(--color-border);
    font-size: 13px;
}

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

@media (max-width: 480px) {
    .footer .container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}