/* =========================================================================
   Lunovix APK Distribution Hub & Web-to-APK Builder
   Fully Responsive Multi-Screen Stylesheet (Mobile, Tablet, Desktop)
   ========================================================================= */

:root {
    --bg-base: #070a12;
    --bg-surface: rgba(15, 23, 42, 0.75);
    --bg-surface-hover: rgba(30, 41, 59, 0.85);
    --bg-card: rgba(18, 26, 47, 0.75);
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(6, 182, 212, 0.35);

    --primary-cyan: #06b6d4;
    --primary-blue: #3b82f6;
    --primary-purple: #8b5cf6;
    --primary-emerald: #10b981;

    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;

    --font-ar: 'Tajawal', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-en: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;

    --shadow-glow: 0 0 35px -5px rgba(6, 182, 212, 0.25);
    --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--bg-base);
    color: var(--text-main);
    font-family: var(--font-ar);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body[dir="ltr"] {
    font-family: var(--font-en);
}

/* Base SVG safety guard: NEVER allow unconstrained SVGs to blow up */
svg {
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
}

/* Ambient Glows */
.ambient-glow {
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    filter: blur(140px);
    opacity: 0.35;
}

.glow-1 {
    top: -150px;
    right: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #06b6d4, transparent 70%);
}

.glow-2 {
    top: 40%;
    left: -150px;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, #8b5cf6, transparent 70%);
}

.glow-3 {
    bottom: -100px;
    right: 30%;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, #3b82f6, transparent 70%);
}

/* Responsive Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* =========================================================================
   Top Navigation Bar
   ========================================================================= */
.top-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(7, 10, 18, 0.88);
    border-bottom: 1px solid var(--border-subtle);
    padding: 12px 0;
}

.header-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.header-main-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.brand-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 0 10px rgba(6, 182, 212, 0.4));
    transition: transform var(--transition-smooth);
}

.brand:hover .brand-icon {
    transform: scale(1.05);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 900;
    letter-spacing: 1.5px;
    background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.1;
}

.brand-sub {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary-cyan);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.server-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    color: #6ee7b7;
    white-space: nowrap;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--primary-emerald);
    box-shadow: 0 0 8px var(--primary-emerald);
    animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}

.lang-switch-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-switch-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--border-glow);
}

/* Nav Tabs Row */
.header-nav-tabs {
    display: flex;
    align-self: center;
    background: rgba(15, 23, 42, 0.9);
    padding: 4px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-subtle);
    max-width: 440px;
    width: 100%;
}

.nav-tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.88rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-tab-btn.active {
    background: linear-gradient(135deg, var(--primary-cyan), var(--primary-blue));
    color: #ffffff;
    box-shadow: 0 2px 10px rgba(6, 182, 212, 0.4);
}

/* =========================================================================
   Hero Section
   ========================================================================= */
.hero-section {
    padding: 48px 0 28px;
    text-align: center;
}

.hero-container {
    max-width: 840px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 16px;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.25);
    border-radius: var(--radius-full);
    font-size: 0.84rem;
    font-weight: 600;
    color: #a5f3fc;
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(1.8rem, 4vw, 2.75rem);
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.gradient-text {
    background: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #9f7aea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(0.95rem, 2vw, 1.12rem);
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 30px;
    line-height: 1.7;
}

.value-props {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.prop-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    color: #cbd5e1;
    backdrop-filter: blur(10px);
}

.prop-item svg {
    color: var(--primary-cyan);
}

/* =========================================================================
   Builder Section (Web-to-APK)
   ========================================================================= */
.builder-section {
    padding: 24px 0 60px;
}

.builder-card {
    background: var(--bg-card);
    backdrop-filter: blur(28px);
    -webkit-backdrop-filter: blur(28px);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-card), var(--shadow-glow);
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.builder-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 32px;
}

.builder-header-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 16px;
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.35);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    color: #c4b5fd;
    margin-bottom: 14px;
}

.builder-title {
    font-size: clamp(1.4rem, 3.5vw, 2.1rem);
    font-weight: 900;
    margin-bottom: 10px;
    line-height: 1.3;
}

.builder-subtitle {
    color: var(--text-muted);
    font-size: 0.94rem;
    line-height: 1.6;
}

/* Mode Switcher Tabs */
.mode-tabs {
    display: flex;
    gap: 10px;
    max-width: 540px;
    margin: 0 auto 24px;
    background: rgba(0, 0, 0, 0.4);
    padding: 6px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.mode-tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition-fast);
}

.mode-tab-btn svg {
    width: 20px !important;
    height: 20px !important;
    min-width: 20px;
    max-width: 20px;
    max-height: 20px;
}

.mode-tab-btn.active {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    border: 1px solid var(--border-glow);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

/* Source Input Area */
.form-source-area {
    margin-bottom: 24px;
}

.dropzone {
    border: 2px dashed rgba(6, 182, 212, 0.45);
    background: rgba(6, 182, 212, 0.04);
    border-radius: var(--radius-lg);
    padding: 36px 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-smooth);
    position: relative;
}

.dropzone:hover, .dropzone.dragover {
    border-color: var(--primary-cyan);
    background: rgba(6, 182, 212, 0.09);
    transform: translateY(-2px);
}

.file-input-hidden {
    display: none !important;
}

.dropzone-icon {
    font-size: 2.6rem;
    margin-bottom: 10px;
}

.dropzone-content h4 {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 6px;
    color: var(--text-main);
}

.dropzone-content p {
    color: var(--text-muted);
    font-size: 0.85rem;
    max-width: 520px;
    margin: 0 auto;
}

.file-selected-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 14px;
    padding: 8px 18px;
    background: rgba(16, 185, 129, 0.18);
    border: 1px solid rgba(16, 185, 129, 0.45);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: #6ee7b7;
    font-weight: 700;
}

/* URL Input */
.url-input-box {
    background: rgba(10, 14, 25, 0.7);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.url-input-box label {
    display: block;
    font-size: 0.92rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.url-field-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #04070e;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    transition: all var(--transition-fast);
}

.url-field-wrap:focus-within {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 16px -2px rgba(6, 182, 212, 0.4);
}

.url-field-wrap svg {
    color: var(--primary-cyan);
}

.url-field-wrap input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-size: 0.95rem;
    font-family: monospace;
    width: 100%;
}

/* Config Grid */
.form-config-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 28px;
    background: rgba(10, 14, 25, 0.55);
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.86rem;
    font-weight: 700;
    color: #cbd5e1;
}

.form-group input[type="text"] {
    background: #070a12;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    height: 48px;
    transition: all var(--transition-fast);
}

.form-group input[type="text"]:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 12px -2px rgba(6, 182, 212, 0.35);
}

.field-hint {
    font-size: 0.74rem;
    color: var(--text-dim);
}

/* Icon Upload Group */
.icon-upload-wrapper {
    display: flex;
    align-items: center;
    gap: 14px;
}

.icon-preview-box {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: #070a12;
    border: 1px solid var(--border-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
}

.icon-preview-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.icon-placeholder {
    font-size: 1.6rem;
}

.icon-upload-action {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.icon-select-btn {
    width: fit-content;
    padding: 8px 14px;
    font-size: 0.82rem;
}

/* Color Picker */
.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    min-height: 48px;
}

.color-picker-input {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    background: transparent;
    cursor: pointer;
    padding: 2px;
    flex-shrink: 0;
}

.color-presets {
    display: flex;
    gap: 6px;
}

.color-chip {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.color-chip:hover {
    transform: scale(1.15);
}

.color-chip.active {
    border-color: #ffffff;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.6);
}

/* Submit Action Button */
.builder-actions {
    display: flex;
    justify-content: center;
}

.btn-build-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    max-width: 480px;
    min-height: 54px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 900;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    font-family: inherit;
    box-shadow: 0 8px 28px -4px rgba(6, 182, 212, 0.45);
    transition: all var(--transition-smooth);
}

.btn-build-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 34px -2px rgba(6, 182, 212, 0.65);
    filter: brightness(1.1);
}

/* Build Progress Panel */
.build-progress-panel {
    background: rgba(10, 14, 25, 0.9);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 36px 20px;
    text-align: center;
    animation: fadeIn 0.4s ease;
}

.spinner-ring {
    width: 54px;
    height: 54px;
    margin: 0 auto 16px;
    border: 4px solid rgba(6, 182, 212, 0.2);
    border-top-color: var(--primary-cyan);
    border-radius: 50%;
    animation: spinRing 1s infinite linear;
}

@keyframes spinRing {
    to { transform: rotate(360deg); }
}

.progress-title {
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 6px;
}

.progress-status-msg {
    color: var(--primary-cyan);
    font-size: 0.92rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.progress-bar-track {
    width: 100%;
    max-width: 560px;
    height: 8px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    margin: 0 auto 28px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #06b6d4, #3b82f6, #8b5cf6);
    border-radius: var(--radius-full);
    transition: width 0.4s ease;
}

.build-steps-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    max-width: 840px;
    margin: 0 auto;
    text-align: right;
}

[dir="ltr"] .build-steps-list {
    text-align: left;
}

.step-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    font-size: 0.82rem;
    color: var(--text-dim);
}

.step-item.active {
    color: #ffffff;
    border-color: var(--primary-cyan);
    background: rgba(6, 182, 212, 0.08);
}

.step-item.done {
    color: #34d399;
    border-color: rgba(16, 185, 129, 0.4);
}

/* Build Result Panel */
.build-result-panel {
    background: rgba(13, 19, 33, 0.92);
    border: 1px solid rgba(16, 185, 129, 0.5);
    border-radius: var(--radius-lg);
    padding: 36px 20px;
    text-align: center;
    box-shadow: 0 0 35px -5px rgba(16, 185, 129, 0.3);
    animation: fadeIn 0.4s ease;
}

.result-success-badge {
    display: inline-block;
    padding: 5px 18px;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.4);
    border-radius: var(--radius-full);
    color: #34d399;
    font-size: 0.9rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.result-app-name {
    font-size: 1.7rem;
    font-weight: 900;
    margin-bottom: 10px;
}

.result-meta-row {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}

.meta-tag {
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: #cbd5e1;
    font-family: monospace;
}

.meta-tag.verified {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    font-family: inherit;
    font-weight: 700;
}

.result-actions-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 32px;
    max-width: 680px;
    margin: 0 auto;
}

.result-download-box {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
    min-width: 240px;
}

.result-qr-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.qr-caption {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.btn-new-build {
    background: transparent;
    border: 1px dashed var(--border-subtle);
    width: 100%;
}

/* =========================================================================
   Apps Section (Official Apps)
   ========================================================================= */
.apps-section {
    padding: 40px 0 70px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-subtle);
}

.section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    margin-bottom: 6px;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 0.92rem;
}

.filter-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    min-width: 220px;
}

.search-box:focus-within {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 14px -3px rgba(6, 182, 212, 0.3);
}

.search-box svg {
    color: var(--text-dim);
}

.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.88rem;
    width: 100%;
}

.tab-filters {
    display: flex;
    background: var(--bg-surface);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
}

.filter-btn {
    padding: 7px 16px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-cyan), var(--primary-blue));
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(6, 182, 212, 0.35);
}

/* Apps Grid */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

/* App Card */
.app-card {
    background: var(--bg-card);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-smooth);
    overflow: hidden;
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-cyan), var(--primary-purple));
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.app-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-card), var(--shadow-glow);
}

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

.card-top {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 18px;
}

.app-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 8px 18px -4px rgba(0, 0, 0, 0.4);
}

.app-icon-merchant {
    background: linear-gradient(135deg, #06b6d4 0%, #2563eb 100%);
    box-shadow: 0 8px 20px -4px rgba(6, 182, 212, 0.4);
}

.app-icon-admin {
    background: linear-gradient(135deg, #8b5cf6 0%, #4f46e5 100%);
    box-shadow: 0 8px 20px -4px rgba(139, 92, 246, 0.4);
}

.app-icon-svg {
    width: 32px;
    height: 32px;
    color: #ffffff;
}

.card-title-box {
    flex: 1;
}

.card-badge-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.category-badge {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.08);
    color: #cbd5e1;
}

.verified-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    font-weight: 700;
    color: #34d399;
}

.card-app-name {
    font-size: 1.35rem;
    font-weight: 800;
    line-height: 1.3;
}

.card-package-id {
    font-size: 0.78rem;
    color: var(--text-dim);
    font-family: monospace;
    direction: ltr;
    display: inline-block;
}

/* Metadata Bar */
.meta-badges-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    padding: 10px;
    background: rgba(10, 14, 25, 0.6);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.04);
    margin-bottom: 18px;
}

.meta-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.meta-label {
    font-size: 0.68rem;
    color: var(--text-dim);
    text-transform: uppercase;
    font-weight: 600;
}

.meta-val {
    font-size: 0.82rem;
    color: var(--text-main);
    font-weight: 700;
}

.card-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 18px;
}

.features-list {
    list-style: none;
    margin-bottom: 22px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.84rem;
    color: #cbd5e1;
}

.feature-check {
    width: 15px;
    height: 15px;
    color: var(--primary-cyan);
    margin-top: 3px;
}

.card-actions-row {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: auto;
}

.btn-primary-download {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    min-height: 50px;
    padding: 12px 20px;
    background: linear-gradient(135deg, #06b6d4 0%, #2563eb 100%);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 800;
    border-radius: var(--radius-md);
    text-decoration: none;
    border: none;
    cursor: pointer;
    box-shadow: 0 6px 18px -2px rgba(6, 182, 212, 0.35);
    transition: all var(--transition-fast);
}

.btn-primary-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px -2px rgba(6, 182, 212, 0.55);
}

.secondary-actions-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.btn-sub {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: #cbd5e1;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
    text-decoration: none;
}

.btn-sub:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-glow);
    color: #ffffff;
}

.btn-sub svg {
    color: var(--primary-cyan);
}

.checksum-box {
    margin-top: 10px;
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.04);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.checksum-text {
    font-family: monospace;
    font-size: 0.7rem;
    color: var(--text-dim);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    direction: ltr;
}

.checksum-copy-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 4px;
    font-size: 0.75rem;
}

/* =========================================================================
   Guide & CLI Sections
   ========================================================================= */
.guide-section {
    padding: 30px 0 60px;
}

.guide-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 36px;
}

.guide-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 30px;
}

.guide-icon-box {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(59, 130, 246, 0.2));
    border: 1px solid var(--border-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-cyan);
    flex-shrink: 0;
}

.guide-title {
    font-size: 1.55rem;
    font-weight: 800;
}

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

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.step-card {
    background: rgba(10, 14, 25, 0.6);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 22px;
}

.step-number {
    font-size: 2rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.step-content h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 0.84rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Dev Section */
.dev-section {
    padding-bottom: 60px;
}

.dev-card {
    background: rgba(13, 19, 33, 0.65);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 30px;
}

.dev-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.dev-badge {
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid rgba(139, 92, 246, 0.4);
    color: #c4b5fd;
    font-size: 0.72rem;
    font-weight: 800;
    font-family: monospace;
}

.dev-card h3 {
    font-size: 1.25rem;
    font-weight: 800;
}

.dev-card p {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-bottom: 18px;
}

.code-blocks {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.code-block {
    background: #04070e;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.code-label {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--primary-cyan);
}

.code-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    gap: 10px;
}

.code-content code {
    font-family: monospace;
    font-size: 0.82rem;
    color: #38bdf8;
    overflow-x: auto;
    direction: ltr;
}

.copy-code-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    cursor: pointer;
    flex-shrink: 0;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border-subtle);
    padding: 28px 0;
    background: rgba(5, 8, 15, 0.95);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-info p {
    font-size: 0.78rem;
    color: var(--text-dim);
}

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

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.82rem;
}

.footer-links a:hover {
    color: var(--primary-cyan);
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(3, 7, 18, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-smooth);
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background: #0d1322;
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-xl);
    padding: 30px 20px;
    max-width: 420px;
    width: 100%;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
    text-align: center;
}

.modal-close-btn {
    position: absolute;
    top: 16px;
    inset-inline-end: 16px;
    background: rgba(255, 255, 255, 0.08);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    cursor: pointer;
}

.modal-icon-badge {
    font-size: 2rem;
    margin-bottom: 8px;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 6px;
}

.modal-desc {
    color: var(--text-muted);
    font-size: 0.84rem;
    margin-bottom: 20px;
}

.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.qr-canvas-wrapper {
    background: #ffffff;
    padding: 14px;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 190px;
    min-height: 190px;
}

.qr-canvas-wrapper img, .qr-canvas-wrapper canvas {
    display: block;
    max-width: 100%;
}

.qr-url-box {
    display: flex;
    width: 100%;
    gap: 6px;
}

.qr-url-box input {
    flex: 1;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    color: #cbd5e1;
    font-size: 0.78rem;
    font-family: monospace;
    outline: none;
    direction: ltr;
}

.qr-copy-btn {
    background: var(--primary-cyan);
    border: none;
    border-radius: var(--radius-sm);
    color: #000000;
    font-weight: 700;
    font-size: 0.78rem;
    padding: 0 14px;
    cursor: pointer;
}

.modal-download-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: linear-gradient(135deg, #06b6d4, #2563eb);
    color: #ffffff;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.9rem;
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: 20px;
    inset-inline-start: 20px;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    background: #0f172a;
    border: 1px solid var(--border-glow);
    color: #ffffff;
    padding: 12px 18px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    pointer-events: auto;
    animation: toastIn 0.35s ease forwards;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =========================================================================
   Responsive Breakpoints: Flawless Mobile & Tablet Experience
   ========================================================================= */

@media (max-width: 992px) {
    .container {
        padding: 0 16px;
    }
    .header-nav-tabs {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .top-header {
        padding: 10px 0;
    }

    .header-container {
        gap: 10px;
    }

    .server-badge {
        display: none; /* Hide on mobile to conserve header space */
    }

    .brand-title {
        font-size: 1.15rem;
    }

    .brand-icon {
        width: 32px;
        height: 32px;
    }

    .nav-tab-btn {
        padding: 7px 10px;
        font-size: 0.82rem;
    }

    .hero-section {
        padding: 32px 0 20px;
    }

    .hero-badge {
        font-size: 0.78rem;
        padding: 4px 12px;
    }

    .value-props {
        gap: 6px;
    }

    .prop-item {
        padding: 6px 12px;
        font-size: 0.76rem;
    }

    .builder-card {
        padding: 24px 16px;
        border-radius: 18px;
    }

    .form-config-grid {
        grid-template-columns: 1fr;
        padding: 16px;
        gap: 16px;
    }

    .mode-tabs {
        flex-direction: column;
        max-width: 100%;
        gap: 6px;
    }

    .mode-tab-btn {
        padding: 10px 14px;
        font-size: 0.85rem;
    }

    .dropzone {
        padding: 24px 14px;
    }

    .dropzone-icon {
        font-size: 2.2rem;
    }

    .dropzone-content h4 {
        font-size: 0.98rem;
    }

    .btn-build-submit {
        max-width: 100%;
        font-size: 1rem;
        min-height: 50px;
    }

    .build-steps-list {
        grid-template-columns: 1fr;
    }

    .result-actions-grid {
        flex-direction: column;
        gap: 24px;
    }

    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }

    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        min-width: 100%;
    }

    .tab-filters {
        width: 100%;
    }

    .filter-btn {
        flex: 1;
        text-align: center;
    }

    .apps-grid {
        grid-template-columns: 1fr;
    }

    .app-card {
        padding: 22px 16px;
    }

    .meta-badges-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .guide-card {
        padding: 24px 16px;
    }

    .guide-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .dev-card {
        padding: 20px 14px;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    .hero-title {
        font-size: 1.65rem;
    }

    .builder-title {
        font-size: 1.35rem;
    }

    .color-presets {
        flex-wrap: wrap;
    }

    .secondary-actions-group {
        grid-template-columns: 1fr;
    }
}