/* ==========================================================================
   Randomizer — GitHub Dark Graphite Stylesheet
   Design language synchronized with Time-Calculator & Json-Formatter
   ========================================================================== */

:root {
    /* GitHub Graphite Dark Palette (Deep Graphite Edition) */
    --color-canvas-default: #0d1117;
    --color-canvas-subtle: #11151c;
    --color-canvas-inset: #090c12;
    --color-border-default: #262c36;
    --color-border-muted: #1c212a;
    --color-border-subtle: rgba(240, 246, 252, 0.08);

    /* Text Colors */
    --color-fg-default: #f0f6fc;
    --color-fg-muted: #8b949e;
    --color-fg-subtle: #6e7681;
    --color-fg-on-emphasis: #ffffff;

    /* Brand Accents */
    --color-accent-fg: #5E6FF8;
    --color-accent-emphasis: #4f5ee3;
    --color-accent-muted: rgba(94, 111, 248, 0.15);
    --color-accent-subtle: rgba(94, 111, 248, 0.08);

    /* GitHub Success (Iconic Green) */
    --color-success-fg: #3fb950;
    --color-success-emphasis: #238636;
    --color-success-hover: #2ea043;
    --color-success-muted: rgba(46, 160, 67, 0.15);
    --color-success-border: rgba(46, 160, 67, 0.35);

    /* GitHub Danger (Red) */
    --color-danger-fg: #f85149;
    --color-danger-emphasis: #da3633;
    --color-danger-muted: rgba(248, 81, 73, 0.15);
    --color-danger-border: rgba(248, 81, 73, 0.35);

    /* GitHub Attention / Warning (Amber) */
    --color-attention-fg: #d29922;
    --color-attention-muted: rgba(187, 128, 9, 0.15);
    --color-attention-border: rgba(187, 128, 9, 0.35);

    /* GitHub Purple */
    --color-purple-fg: #bc8cff;
    --color-purple-muted: rgba(163, 113, 247, 0.15);
    --color-purple-border: rgba(163, 113, 247, 0.35);

    /* GitHub Control / Button Backgrounds */
    --color-btn-bg: #181d24;
    --color-btn-border: #262c36;
    --color-btn-hover-bg: #222832;
    --color-btn-hover-border: #6e7681;
    --color-btn-active-bg: #14181f;

    /* Typography */
    --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", "Noto Sans", Helvetica, Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "JetBrains Mono", "Liberation Mono", monospace;

    /* Borders, Radius & Shadows */
    --radius-lg: 8px;
    --radius-md: 6px;
    --radius-sm: 6px;
    --shadow-card: 0 8px 24px rgba(1, 4, 9, 0.4);
    --transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: var(--font-ui);
    background-color: var(--color-canvas-default);
    color: var(--color-fg-default);
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Ambient Background Lights */
.ambient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.18;
    transition: background 0.8s ease, transform 0.8s ease;
}

.orb-1 {
    top: -100px;
    left: 20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #1f6feb 0%, transparent 70%);
}

.orb-2 {
    bottom: -150px;
    right: 20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #238636 0%, transparent 70%);
}

/* Main Layout Shell */
.app-layout {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
    overflow: hidden;
    background-color: var(--color-canvas-default);
}

/* ==========================================================================
   Top Navigation Bar (Identical to Time-Calculator)
   ========================================================================== */
.navbar {
    height: 56px;
    min-height: 56px;
    background: var(--color-canvas-subtle);
    border-bottom: 1px solid var(--color-border-default);
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 16px;
    user-select: none;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-self: start;
}

.brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-icon-img {
    width: 34px;
    height: 34px;
    display: block;
    user-select: none;
}

.brand-text h1 {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    color: var(--color-fg-default);
    font-family: var(--font-ui);
}

.nav-center {
    display: flex;
    align-items: center;
    gap: 14px;
    justify-self: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    font-family: var(--font-mono);
    border: 1px solid transparent;
    transition: var(--transition);
}

.badge-ready {
    background: var(--color-success-muted);
    color: var(--color-success-fg);
    border-color: var(--color-success-border);
}

.badge-rolling {
    background: var(--color-accent-muted);
    color: var(--color-accent-fg);
    border-color: rgba(56, 139, 253, 0.4);
    animation: pulseBadge 1.2s infinite;
}

.badge-copied {
    background: var(--color-purple-muted);
    color: var(--color-purple-fg);
    border-color: var(--color-purple-border);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: currentColor;
}

@keyframes pulseBadge {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(0.98); }
}

.stats-group {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    color: var(--color-fg-muted);
}

.stat-item strong {
    color: var(--color-fg-default);
    font-family: var(--font-mono);
    margin-left: 3px;
}

.stat-separator {
    color: var(--color-border-default);
    font-size: 0.65rem;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    justify-self: end;
}

/* Animated Switch in Navbar */
.nav-switch-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--color-canvas-inset);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-default);
    cursor: pointer;
}

.switch-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-fg-muted);
    user-select: none;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 34px;
    height: 18px;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-slider {
    position: absolute;
    inset: 0;
    background-color: #21262d;
    border: 1px solid #30363d;
    border-radius: 20px;
    transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.switch-slider::before {
    position: absolute;
    content: "";
    height: 12px;
    width: 12px;
    left: 2px;
    bottom: 2px;
    background-color: var(--color-fg-muted);
    border-radius: 50%;
    transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.toggle-switch input:checked + .switch-slider {
    background-color: var(--color-success-emphasis);
    border-color: var(--color-success-hover);
}

.toggle-switch input:checked + .switch-slider::before {
    transform: translateX(16px);
    background-color: #ffffff;
}

/* ==========================================================================
   Buttons (GitHub Primer Style)
   ========================================================================== */
.btn {
    font-family: var(--font-ui);
    font-size: 0.82rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-btn-border);
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    outline: none;
    line-height: 1.4;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent-emphasis);
    outline-offset: 2px;
}

.btn-sm {
    padding: 3px 10px;
    font-size: 0.76rem;
}

.btn-icon-only {
    padding: 5px;
    width: 30px;
    height: 30px;
}

.btn-secondary {
    background: var(--color-btn-bg);
    border-color: var(--color-btn-border);
    color: var(--color-fg-default);
}

.btn-secondary:hover {
    background: var(--color-btn-hover-bg);
    border-color: var(--color-btn-hover-border);
}

.btn-secondary:active {
    background: var(--color-btn-active-bg);
    transform: translateY(1px);
}

.btn-danger-hover:hover {
    color: var(--color-danger-fg);
    border-color: var(--color-danger-border);
    background: var(--color-danger-muted);
}

.btn-primary {
    background: var(--color-success-emphasis);
    border-color: rgba(240, 246, 252, 0.1);
    color: #ffffff;
    box-shadow: 0 1px 0 rgba(27, 31, 36, 0.1);
}

.btn-primary:hover {
    background: var(--color-success-hover);
    border-color: rgba(240, 246, 252, 0.15);
}

.btn-primary:active {
    background: var(--color-success-emphasis);
    transform: translateY(1px);
}

.btn-roll-action {
    width: 100%;
    padding: 12px 18px;
    font-size: 1rem;
    font-weight: 600;
    gap: 10px;
    box-shadow: 0 2px 8px rgba(35, 134, 54, 0.3);
}

.btn-roll-action:hover {
    box-shadow: 0 4px 14px rgba(46, 160, 67, 0.45);
}

.btn-shortcut-hint {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.25);
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.3px;
}

.icon-dice-spin {
    width: 24px;
    height: 24px;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-roll-action.rolling .icon-dice-spin {
    animation: spinDice 0.6s linear infinite;
}

@keyframes spinDice {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   Main Application Body (Center Stage + Docked Right Sidebar: Time-Calculator Style)
   ========================================================================== */
.main-app-body {
    position: relative;
    width: 100%;
    height: calc(100vh - 56px);
    height: calc(100dvh - 56px);
    overflow: hidden;
    background: var(--color-canvas-default);
}

.center-stage-container {
    width: 100%;
    height: 100%;
    overflow-y: auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 28px 24px 40px;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border-default) transparent;
}

.center-stage-container::-webkit-scrollbar {
    width: 6px;
}
.center-stage-container::-webkit-scrollbar-thumb {
    background: var(--color-border-default);
    border-radius: 3px;
}
.center-stage-container::-webkit-scrollbar-thumb:hover {
    background: var(--color-fg-muted);
}

/* Center Stage: Calculator Card */
.calc-center-card {
    background: var(--color-canvas-subtle);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    width: 100%;
    max-width: 640px;
}

.card-header {
    height: 48px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-canvas-subtle);
    border-bottom: 1px solid var(--color-border-default);
    gap: 12px;
}

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

.mode-icon {
    display: flex;
    align-items: center;
}

.mode-icon-img,
.mode-icon svg {
    width: 28px;
    height: 28px;
    display: block;
    user-select: none;
}

.card-title {
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--color-fg-default);
}

/* View Switcher Tabs */
.view-switch {
    display: flex;
    background: var(--color-canvas-default);
    padding: 2px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-default);
    gap: 2px;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--color-fg-muted);
    font-family: var(--font-ui);
    font-size: 0.74rem;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--color-fg-default);
}

.tab-btn.active {
    background: var(--color-btn-bg);
    color: var(--color-fg-default);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Card Body */
.calc-card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.calc-mode-view {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ==========================================================================
   Mode 1: Numbers (2 Clean Fields: From n To m)
   ========================================================================== */
.time-inputs-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 14px;
}

.time-box {
    background: #0f131b;
    border: 1px solid #1e242f;
    border-radius: var(--radius-md);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: var(--transition);
}

.time-box:hover {
    border-color: #2b3340;
}

.time-box-top {
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.time-badge {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 2px 7px;
    border-radius: 20px;
}

.start-badge {
    background: var(--color-accent-muted);
    color: var(--color-accent-fg);
    border: 1px solid rgba(56, 139, 253, 0.35);
}

.end-badge {
    background: var(--color-purple-muted);
    color: var(--color-purple-fg);
    border: 1px solid var(--color-purple-border);
}

.custom-time-input-wrap {
    width: 100%;
    background: #090c12;
    border: 1px solid #1a1f27;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    transition: var(--transition);
}

.custom-time-input-wrap:focus-within {
    border-color: var(--color-accent-fg);
    box-shadow: 0 0 0 3px rgba(56, 139, 253, 0.25);
}

.num-input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--color-fg-default);
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 600;
    width: 100%;
    text-align: center;
    -moz-appearance: textfield;
}

.num-input::-webkit-outer-spin-button,
.num-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.time-arrow-indicator {
    color: var(--color-fg-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
}

.time-arrow-indicator.range-colon-indicator {
    color: var(--color-fg-muted);
    font-family: var(--font-mono);
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1;
    user-select: none;
    padding-top: 20px;
}

/* Options Bar & Checkboxes */
.options-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    background: #0f131b;
    border: 1px solid #1e242f;
    border-radius: var(--radius-md);
    padding: 10px 14px;
}

.option-field {
    display: flex;
    align-items: center;
    gap: 8px;
}

.field-label {
    font-size: 0.74rem;
    font-weight: 500;
    color: var(--color-fg-muted);
}

.num-compact-input {
    background: var(--color-canvas-inset);
    border: 1px solid var(--color-border-default);
    border-radius: 4px;
    color: var(--color-fg-default);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 3px 6px;
    width: 58px;
    text-align: center;
    outline: none;
    transition: var(--transition);
    -moz-appearance: textfield;
    appearance: textfield;
}

.num-compact-input::-webkit-outer-spin-button,
.num-compact-input::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.num-compact-input:focus {
    border-color: var(--color-accent-fg);
}

.select-compact {
    background: var(--color-canvas-inset);
    border: 1px solid var(--color-border-default);
    border-radius: 4px;
    color: var(--color-fg-default);
    font-family: var(--font-ui);
    font-size: 0.75rem;
    padding: 4px 8px;
    outline: none;
    cursor: pointer;
    transition: var(--transition);
}

.select-compact:focus {
    border-color: var(--color-accent-fg);
}

.custom-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.custom-checkbox input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-box {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    border: 1px solid var(--color-border-default);
    background: var(--color-canvas-inset);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.custom-checkbox input:checked + .checkbox-box {
    background: var(--color-accent-emphasis);
    border-color: var(--color-accent-emphasis);
}

.custom-checkbox input:checked + .checkbox-box::after {
    content: "";
    width: 4px;
    height: 8px;
    border: solid #ffffff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) translate(-1px, -1px);
}

.checkbox-text {
    font-size: 0.75rem;
    color: var(--color-fg-muted);
}

/* ==========================================================================
   Mode 2: List / Phrases Editor
   ========================================================================== */
.list-editor-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.list-editor-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.list-editor-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge-mini {
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 12px;
    font-family: var(--font-mono);
    background: var(--color-canvas-inset);
    color: var(--color-fg-muted);
    border: 1px solid var(--color-border-default);
}

.badge-mini.anim-active {
    background: var(--color-accent-muted);
    color: var(--color-accent-fg);
    border-color: rgba(56, 139, 253, 0.35);
}

.list-editor-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.list-textarea {
    width: 100%;
    min-height: 120px;
    background: var(--color-canvas-inset);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    color: var(--color-fg-default);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.5;
    padding: 10px 12px;
    resize: vertical;
    outline: none;
    transition: var(--transition);
}

.list-textarea:focus {
    border-color: var(--color-accent-fg);
    box-shadow: 0 0 0 3px rgba(56, 139, 253, 0.25);
}

/* ==========================================================================
   Mode 3: Color Studio
   ========================================================================== */
.color-controls-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.color-segmented-control {
    display: inline-flex;
    background: var(--color-canvas-inset);
    padding: 2px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-default);
}

.segment-btn {
    background: transparent;
    border: none;
    color: var(--color-fg-muted);
    font-family: var(--font-ui);
    font-size: 0.74rem;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.segment-btn.active {
    background: var(--color-btn-bg);
    color: var(--color-fg-default);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.color-preview-container {
    width: 100%;
    min-height: 130px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Single Color Big Preview */
.single-color-card {
    height: 120px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.15);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.single-color-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.color-hex-main {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.color-values-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.color-code-pill {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Palette Multi Preview */
.palette-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    min-height: 110px;
}

.palette-swatch {
    height: 110px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding: 8px;
    cursor: pointer;
    transition: transform 0.18s ease;
}

.palette-swatch:hover {
    transform: translateY(-3px);
}

.palette-swatch-hex {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(2px);
}

/* ==========================================================================
   Mode 4: Dice & Coins
   ========================================================================== */
.dice-submode-tabs {
    display: flex;
    justify-content: center;
}

.dice-controls-section, .coin-controls-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.dice-type-selector {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.dice-type-buttons {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.dice-type-btn {
    background: var(--color-canvas-inset);
    border: 1px solid var(--color-border-default);
    color: var(--color-fg-muted);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.dice-type-btn:hover {
    color: var(--color-accent-fg);
    border-color: var(--color-accent-fg);
}

.dice-type-btn.active {
    background: var(--color-accent-muted);
    color: var(--color-accent-fg);
    border-color: rgba(56, 139, 253, 0.4);
}

/* 3D Coin Interactive Stage */
.coin-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 14px 10px 8px;
    gap: 12px;
}

.coin-wrapper {
    perspective: 1000px;
    width: 114px;
    height: 114px;
    cursor: pointer;
    user-select: none;
    transition: transform 0.2s ease;
}

.coin-wrapper:hover {
    transform: scale(1.05);
}

.coin-wrapper:active {
    transform: scale(0.96);
}

.coin-disc {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    border-radius: 50%;
    transition: transform 0.65s cubic-bezier(0.18, 0.85, 0.3, 1.15);
}

.coin-face {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    border: 3px solid #d4af37;
    box-shadow: 
        inset 0 0 0 3px rgba(0, 0, 0, 0.35),
        inset 0 0 16px rgba(255, 240, 140, 0.4),
        0 8px 24px rgba(0, 0, 0, 0.65),
        0 0 16px rgba(212, 175, 55, 0.25);
    background: radial-gradient(circle at 35% 30%, #fff6bd 0%, #eab308 42%, #a16207 80%, #583304 100%);
    color: #422006;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.45);
}

.coin-face-tails {
    transform: rotateY(180deg);
    border-color: #eab308;
    background: radial-gradient(circle at 35% 30%, #fef08a 0%, #ca8a04 42%, #854d0e 80%, #451a03 100%);
}

.coin-face-title {
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 1.2px;
    margin-top: 2px;
}

.coin-face-sub {
    font-size: 0.56rem;
    font-weight: 700;
    opacity: 0.85;
    letter-spacing: 0.6px;
}

@keyframes coinTossArc {
    0% { transform: translateY(0) scale(1); }
    40% { transform: translateY(-40px) scale(1.15); }
    100% { transform: translateY(0) scale(1); }
}

.coin-tossing {
    animation: coinTossArc 0.65s cubic-bezier(0.22, 0.85, 0.36, 1);
}

/* ==========================================================================
   Live Result Banner & Output Stage
   ========================================================================== */
.live-result-banner {
    background: #0f131b;
    border: 1px solid #1e242f;
    border-radius: var(--radius-md);
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.result-banner-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.result-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    color: var(--color-fg-muted);
}

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

.result-action-btn {
    background: var(--color-canvas-inset);
    border: 1px solid var(--color-border-default);
    color: var(--color-fg-muted);
    font-family: var(--font-ui);
    font-size: 0.72rem;
    font-weight: 500;
    padding: 3px 8px;
    border-radius: 4px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.result-action-btn:hover {
    color: var(--color-fg-default);
    border-color: var(--color-fg-muted);
    background: #181d24;
}

.result-main-value {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 70px;
    text-align: center;
}

.duration-glow {
    font-family: var(--font-mono);
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: #ffffff;
    word-break: break-word;
    transition: transform 0.15s ease, opacity 0.15s ease;
}

/* Roulette / Rolling animation effect */
.duration-glow.animating {
    opacity: 0.75;
    transform: scale(0.96);
    filter: blur(0.5px);
    color: var(--color-fg-default);
}

.duration-glow.result-pop {
    animation: resultPop 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes resultPop {
    0% { transform: scale(0.85); opacity: 0.7; }
    50% { transform: scale(1.08); }
    100% { transform: scale(1); opacity: 1; }
}

/* Result Breakdown */
.result-breakdown-card {
    background: #090c12;
    border: 1px solid #1a1f27;
    border-radius: 4px;
    padding: 8px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--color-fg-muted);
}

.result-breakdown-card strong {
    color: var(--color-fg-default);
    font-family: var(--font-mono);
}

/* ==========================================================================
   Right Sidebar: Saved Roll List (Attached to Right Wall: Time-Calculator Style)
   ========================================================================== */
.saved-sidebar-card {
    background: var(--color-canvas-subtle);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.saved-sidebar-card.docked-right {
    position: absolute;
    top: 26px;
    right: 26px;
    width: 360px;
    max-width: calc(100vw - 52px);
    height: auto;
    max-height: calc(100vh - 56px - 52px);
    flex-shrink: 0;
    z-index: 20;
    transition: var(--transition);
}

.saved-sidebar-card.docked-right:hover {
    border-color: var(--color-border-default);
}

/* Sidebar Header Action Buttons (Clear, Copy) */
.sidebar-header-actions {
    flex-shrink: 0;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--color-canvas-subtle);
    border-bottom: 1px solid var(--color-border-default);
}

.sidebar-header-actions .sidebar-top-btn {
    width: auto;
    padding: 4px 10px;
    font-size: 0.76rem;
    font-weight: 500;
    gap: 6px;
}

/* Scrollable Saved List Container */
.saved-list-container {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    padding: 12px;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border-default) transparent;
}

.saved-list-container::-webkit-scrollbar {
    width: 5px;
}
.saved-list-container::-webkit-scrollbar-thumb {
    background: var(--color-border-default);
    border-radius: 3px;
}
.saved-list-container::-webkit-scrollbar-thumb:hover {
    background: var(--color-fg-muted);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 28px 16px;
    color: var(--color-fg-muted);
}

.empty-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    color: var(--color-fg-muted);
}

.empty-state h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-fg-default);
    margin-bottom: 6px;
}

.empty-state p {
    font-size: 0.78rem;
    line-height: 1.45;
    color: var(--color-fg-muted);
}

/* Entries Items List */
.entries-items-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.saved-item-row {
    background: var(--color-canvas-inset);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: var(--transition);
    cursor: pointer;
}

.saved-item-row:hover {
    background: var(--color-canvas-subtle);
    border-color: var(--color-border-muted);
}

.item-row-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
}

.item-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    flex: 1;
}

.item-num {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--color-fg-subtle);
    flex-shrink: 0;
}

.item-badge {
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    padding: 1px 6px;
    border-radius: 4px;
    text-transform: uppercase;
    flex-shrink: 0;
}

.badge-numbers {
    background: var(--color-accent-muted);
    color: var(--color-accent-fg);
    border: 1px solid rgba(56, 139, 253, 0.3);
}

.badge-list {
    background: var(--color-purple-muted);
    color: var(--color-purple-fg);
    border: 1px solid var(--color-purple-border);
}

.badge-color {
    background: rgba(235, 143, 0, 0.15);
    color: #f0883e;
    border: 1px solid rgba(235, 143, 0, 0.35);
}

.badge-dice {
    background: var(--color-success-muted);
    color: var(--color-success-fg);
    border: 1px solid var(--color-success-border);
}

.badge-coin {
    background: rgba(212, 175, 55, 0.16);
    color: #eab308;
    border: 1px solid rgba(212, 175, 55, 0.38);
}

.item-title {
    font-size: 0.68rem;
    color: var(--color-fg-subtle);
    font-family: var(--font-mono);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.item-actions {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
}

.item-row-body {
    display: flex;
    align-items: flex-start;
    width: 100%;
}

.item-value {
    font-family: var(--font-mono);
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--color-fg-default);
    line-height: 1.45;
    word-break: break-word;
    width: 100%;
    max-height: 6em;
    overflow-y: auto;
    scrollbar-width: none;
}

.item-value::-webkit-scrollbar {
    display: none;
}

.color-item-chip {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
}

.color-swatch-mini {
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.25);
    flex-shrink: 0;
    vertical-align: middle;
    margin-right: 5px;
}

.item-btn {
    background: transparent;
    border: none;
    color: var(--color-fg-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.item-btn:hover {
    color: var(--color-accent-fg);
    background: var(--color-canvas-subtle);
}

.item-btn-remove:hover {
    color: var(--color-danger-fg);
    background: var(--color-danger-muted);
}

/* ==========================================================================
   Notification Toasts
   ========================================================================== */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column-reverse;
    gap: 8px;
    pointer-events: none;
}

.toast {
    background: #161b22;
    border: 1px solid #30363d;
    color: var(--color-fg-default);
    padding: 9px 16px;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 500;
    box-shadow: 0 8px 24px rgba(1, 4, 9, 0.6);
    display: flex;
    align-items: center;
    gap: 8px;
    animation: toastSlideUp 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes toastSlideUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Utilities & Custom Scrollbars
   ========================================================================== */
.hidden {
    display: none !important;
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-canvas-inset);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-default);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #343b46;
}

/* ==========================================================================
   Responsive Adaptations (Time-Calculator Exact Logic)
   ========================================================================== */
@media (max-width: 1400px) {
    .main-app-body {
        display: flex;
        flex-direction: row;
    }
    .center-stage-container {
        flex: 1;
        width: auto;
        padding: 24px 16px;
    }
    .saved-sidebar-card.docked-right {
        position: static;
        margin: 24px 18px 24px 0;
        width: 350px;
        max-width: 350px;
    }
}

@media (max-width: 980px) {
    .main-app-body {
        display: flex;
        flex-direction: column;
        overflow-y: auto;
        height: auto;
    }
    .center-stage-container {
        overflow-y: visible;
        padding: 16px 14px;
        width: 100%;
    }
    .saved-sidebar-card.docked-right {
        position: static;
        width: 100%;
        max-width: 100%;
        min-width: 100%;
        margin: 0;
        border-radius: 0;
        border-left: none;
        border-right: none;
        border-top: 1px solid var(--color-border-default);
        box-shadow: none;
    }
}

@media (max-width: 860px) {
    .stats-group {
        display: none;
    }
}

@media (max-width: 640px) {
    .center-stage-container {
        padding: 14px 12px 24px;
    }
    .navbar {
        display: flex;
        justify-content: space-between;
        padding: 0 12px;
    }
    .time-inputs-grid {
        grid-template-columns: 1fr;
    }
    .time-arrow-indicator {
        transform: rotate(90deg);
        padding: 4px 0;
    }
    .time-arrow-indicator.range-colon-indicator {
        transform: none;
        padding-top: 0;
        margin: -4px 0;
    }
    .duration-glow {
        font-size: 2.1rem;
    }
    .view-switch {
        overflow-x: auto;
    }
    .tab-btn {
        padding: 4px 8px;
        font-size: 0.7rem;
    }
    .palette-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}