/* ==========================================================================
   Text2 Favicon Studio - Native App UI Styles
   ========================================================================== */

:root {
    --bg-app: #0f1015;
    --panel-bg: #161821;
    --panel-sub: #1b1e2b;
    --panel-border: rgba(255, 255, 255, 0.08);
    --panel-border-hover: rgba(255, 255, 255, 0.16);
    --text-main: #ffffff;
    --text-sub: #9096a9;
    --text-dim: #5c6275;

    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.3);
    
    --btn-sub-bg: rgba(255, 255, 255, 0.06);
    --btn-sub-hover: rgba(255, 255, 255, 0.12);
    
    --input-bg: #11131a;
    --input-border: rgba(255, 255, 255, 0.1);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-pill: 9999px;

    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

[data-theme="light"] {
    --bg-app: #f2f3f7;
    --panel-bg: #ffffff;
    --panel-sub: #f6f7fb;
    --panel-border: #e1e4ed;
    --panel-border-hover: #cbd0de;
    --text-main: #14171f;
    --text-sub: #636b80;
    --text-dim: #949db2;

    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-glow: rgba(37, 99, 235, 0.2);

    --btn-sub-bg: #eaedf5;
    --btn-sub-hover: #dfe3ee;

    --input-bg: #f8f9fc;
    --input-border: #d3d7e4;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Plus Jakarta Sans', 'Inter', Roboto, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-app);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.2s ease, color 0.2s ease;
    -webkit-font-smoothing: antialiased;
    overscroll-behavior-y: none;
}

/* GPU Hardware Acceleration on Canvas & Previews */
.canvas-frame, #masterCanvas, .preview-tab-icon, .ios-frame, .android-frame, .res-card {
    will-change: transform;
    transform: translateZ(0);
    contain: layout paint;
}

/* App Wrapper */
.app-container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 0 12px 24px 12px;
}

/* ================= APP HEADER ================= */
.app-header {
    margin-top: calc(10px + var(--safe-top));
    padding: 8px 14px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    position: sticky;
    top: 10px;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--btn-sub-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-main);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.btn-icon:hover {
    background: var(--btn-sub-hover);
    border-color: var(--panel-border-hover);
    transform: translateY(-1px);
}

.btn-icon:active {
    transform: scale(0.92);
}

.brand-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: inherit;
    transition: opacity 0.15s ease;
}

.brand-link:hover {
    opacity: 0.88;
}

.brand-logo-img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    flex-shrink: 0;
    display: block;
}

.brand-text {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.95rem;
    font-weight: 700;
}

.brand-divider {
    opacity: 0.25;
}

.brand-app {
    font-weight: 600;
    color: var(--text-main);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-sun { display: none; }
.icon-moon { display: block; }
[data-theme="light"] .icon-sun { display: block; }
[data-theme="light"] .icon-moon { display: none; }

/* ================= WORKSPACE ================= */
.app-main {
    flex: 1;
    margin-top: 14px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 14px;
}

@media (max-width: 960px) {
    .app-main {
        grid-template-columns: 1fr;
    }
}

.app-card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
}

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--panel-border);
}

.card-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

/* ================= MODE SWITCHER (PILL) ================= */
.mode-switcher {
    display: flex;
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    padding: 4px;
    border-radius: var(--radius-md);
    gap: 4px;
    margin-bottom: 14px;
}

.mode-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 10px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--text-sub);
    font-size: 0.84rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s ease;
}

.mode-tab svg {
    width: 15px;
    height: 15px;
}

.mode-tab:hover {
    color: var(--text-main);
}

.mode-tab.active {
    background: var(--panel-bg);
    color: var(--text-main);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Drop Zone */
.drop-zone {
    border: 1.5px dashed var(--input-border);
    background: var(--input-bg);
    border-radius: var(--radius-md);
    padding: 24px 16px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.04);
}

.drop-icon-box {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--btn-sub-bg);
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}

.drop-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.drop-desc {
    font-size: 0.76rem;
    color: var(--text-dim);
}

.hidden-input {
    display: none;
}

/* Forms & Controls */
.control-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--panel-border);
}

.control-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.control-item.full {
    grid-column: span 2;
}

.control-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-sub);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-input, .app-select {
    width: 100%;
    padding: 8px 10px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    font-size: 0.88rem;
    outline: none;
    transition: border 0.15s ease;
}

.app-input:focus, .app-select:focus {
    border-color: var(--accent);
}

/* Shape Pills */
.shape-pill-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}

.shape-btn {
    padding: 6px 4px;
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    color: var(--text-sub);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 600;
    transition: all 0.15s ease;
}

.shape-btn svg {
    width: 18px;
    height: 18px;
}

.shape-btn:hover {
    color: var(--text-main);
}

.shape-btn.active {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent);
}

/* Swatches & Colors */
.color-bar {
    display: flex;
    align-items: center;
    gap: 6px;
}

.color-picker-box {
    position: relative;
    width: 34px;
    height: 32px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--panel-border);
    cursor: pointer;
    flex-shrink: 0;
}

.color-picker-box input[type="color"] {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    cursor: pointer;
    border: none;
}

.swatch-group {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-wrap: wrap;
}

.swatch-dot {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: transform 0.15s ease;
}

.swatch-dot:hover {
    transform: scale(1.15);
}

.swatch-dot.trans {
    background: repeating-conic-gradient(#808080 0% 25%, #ffffff 0% 50%) 50% / 6px 6px;
}

/* Slider */
input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 5px;
    background: var(--input-border);
    border-radius: 99px;
    outline: none;
    cursor: pointer;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
}

/* Emoji Grid */
.emoji-mini-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 4px;
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 6px;
    max-height: 110px;
    overflow-y: auto;
}

.emoji-btn {
    font-size: 1.2rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    cursor: pointer;
    padding: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.emoji-btn:hover {
    background: var(--panel-sub);
}

.emoji-btn.active {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--accent);
}

/* ================= RIGHT PANEL: PREVIEWS & DOWNLOAD ================= */
.preview-stage {
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 170px;
}

.canvas-frame {
    width: 130px;
    height: 130px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: repeating-conic-gradient(rgba(128,128,128,0.12) 0% 25%, transparent 0% 50%) 50% / 14px 14px;
    border-radius: 18px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

#masterCanvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: inherit;
}

/* Simulation Switcher */
.sim-switcher {
    display: flex;
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    padding: 3px;
    border-radius: 8px;
    gap: 3px;
    margin: 12px 0;
}

.sim-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 6px 8px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-sub);
    font-size: 0.76rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.sim-tab svg {
    width: 14px;
    height: 14px;
}

.sim-tab.active {
    background: var(--panel-bg);
    color: var(--text-main);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

.sim-pane {
    display: none;
}

.sim-pane.active {
    display: block;
}

/* Browser Mockup */
.mockup-tab-box {
    background: #181920;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.mockup-tab-head {
    padding: 6px 10px 0 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.tab-badge {
    background: #20222c;
    padding: 5px 10px;
    border-radius: 6px 6px 0 0;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.74rem;
    color: #e4e7eb;
}

.preview-tab-icon {
    width: 14px;
    height: 14px;
    object-fit: contain;
}

.mockup-tab-body {
    padding: 8px 10px;
    background: #20222c;
}

.mockup-url-bar {
    background: #121318;
    border-radius: 4px;
    padding: 4px 8px;
    font-size: 0.7rem;
    color: #8c93a4;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Mobile Icon Row */
.mobile-view-row {
    display: flex;
    justify-content: center;
    gap: 24px;
    padding: 10px 0;
}

.mobile-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.ios-frame {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    overflow: hidden;
    background: #ffffff;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.ios-frame img, .android-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.android-frame {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    background: #ffffff;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.mobile-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-sub);
}

/* SERP Mockup */
.serp-box {
    background: var(--panel-sub);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 10px;
}

.serp-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.serp-icon-wrap {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--input-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.serp-icon-wrap img {
    width: 14px;
    height: 14px;
    object-fit: contain;
}

.serp-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: #4a90e2;
    margin-bottom: 2px;
}

.serp-snippet {
    font-size: 0.74rem;
    color: var(--text-sub);
}

/* Resolution Grid */
.res-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    max-height: 160px;
    overflow-y: auto;
}

.res-card {
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
}

.res-preview-box {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.res-preview-box img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    image-rendering: pixelated;
}

.res-info {
    flex: 1;
    overflow: hidden;
}

.res-size {
    font-size: 0.72rem;
    font-weight: 700;
    white-space: nowrap;
}

.res-filename {
    font-size: 0.62rem;
    color: var(--text-dim);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.btn-res-dl {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-sub);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
}

.btn-res-dl:hover {
    color: var(--accent);
    border-color: var(--accent);
}

/* Primary Action Bar */
.action-area {
    margin-top: 14px;
}

.btn-download-main {
    width: 100%;
    padding: 12px 16px;
    background: var(--accent);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    box-shadow: 0 4px 16px var(--accent-glow);
    transition: all 0.2s ease;
}

.btn-download-main:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-download-main:active:not(:disabled) {
    transform: scale(0.98);
}

.btn-download-main:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.spin-icon {
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* ================= CODE SECTION ================= */
.code-section {
    margin-top: 14px;
}

.code-head-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 6px;
}

.code-tab {
    padding: 4px 10px;
    border-radius: 6px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-sub);
    font-size: 0.76rem;
    font-weight: 600;
    cursor: pointer;
}

.code-tab.active {
    background: var(--panel-bg);
    border-color: var(--panel-border);
    color: var(--text-main);
}

.code-box {
    position: relative;
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.btn-copy-code {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 8px;
    border-radius: 6px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-sub);
    font-size: 0.74rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-copy-code svg {
    width: 13px;
    height: 13px;
}

.btn-copy-code:hover {
    color: var(--text-main);
    border-color: var(--accent);
}

pre.code-view {
    padding: 12px;
    overflow-x: auto;
    font-family: 'SFMono-Regular', Consolas, Menlo, monospace;
    font-size: 0.78rem;
    line-height: 1.5;
    color: #d1d5db;
}

/* ================= TOAST ================= */
.toast-msg {
    position: fixed;
    bottom: calc(20px + var(--safe-bottom));
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: #1c1e28;
    color: #ffffff;
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    z-index: 1000;
    opacity: 0;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
}

.toast-msg.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}