:root {
    --bg-color: #050510;
    --accent-color: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.45);
    --accent-hover: #4f46e5;
    --emerald: #10b981;
    --emerald-glow: rgba(16, 185, 129, 0.4);
    --rose: #f43f5e;
    --amber: #f59e0b;
    --glass-bg: rgba(255, 255, 255, 0.035);
    --glass-card: rgba(255, 255, 255, 0.045);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-focus: rgba(99, 102, 241, 0.6);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Outfit', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
    position: relative;
}

/* Background Blobs */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    filter: blur(85px);
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    opacity: 0.45;
    animation: move 20s infinite alternate ease-in-out;
}

.blob-1 {
    width: 450px;
    height: 450px;
    background: #4f46e5;
    top: -100px;
    left: -100px;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: #7c3aed;
    bottom: -150px;
    right: -120px;
    animation-delay: -5s;
}

.blob-3 {
    width: 350px;
    height: 350px;
    background: #db2777;
    top: 45%;
    left: 50%;
    animation-delay: -10s;
}

@keyframes move {
    from { transform: translate(0, 0); }
    to { transform: translate(70px, 80px); }
}

/* Confetti Canvas */
#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

/* Layout */
.app-layout {
    max-width: 1300px;
    margin: 0 auto;
    padding: 1.5rem 2rem 3rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    min-height: 100vh;
}

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding-bottom: 0.5rem;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.5rem 0.9rem;
    border-radius: 12px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    transition: all 0.2s ease;
}

.back-link svg {
    width: 16px;
    height: 16px;
    transition: transform 0.2s ease;
}

.back-link:hover {
    color: var(--text-primary);
    border-color: var(--accent-color);
    background: rgba(99, 102, 241, 0.12);
}

.back-link:hover svg {
    transform: translateX(-3px);
}

.brand-title {
    text-align: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent-color);
    text-shadow: 0 0 20px var(--accent-glow);
}

.logo-sub {
    display: block;
    font-size: 0.82rem;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    margin-top: -2px;
}

.header-spacer {
    width: 135px;
}

@media (max-width: 600px) {
    .header-spacer {
        display: none;
    }
}

/* Glass Panels */
.glass-panel {
    background: var(--glass-card);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.35);
}

/* Main Content Grid */
.main-content {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 2rem;
    align-items: start;
}

/* Setup Panel */
.setup-panel {
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.title-with-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.title-with-badge h2 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
}

.counter-badge {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent-color);
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
}

.quick-links {
    display: flex;
    gap: 0.4rem;
}

.text-link-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.6rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.text-link-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-color);
    background: rgba(99, 102, 241, 0.15);
}

.text-link-btn.danger:hover {
    color: var(--rose);
    border-color: var(--rose);
    background: rgba(244, 63, 94, 0.15);
}

.input-container textarea {
    width: 100%;
    height: 190px;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1rem;
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 0.95rem;
    line-height: 1.6;
    resize: vertical;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input-container textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
}

/* Settings Grid */
.settings-grid {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.25rem;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.setting-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-secondary);
}

.toggle-mode-group {
    display: flex;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 3px;
    gap: 4px;
}

.mode-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.55rem 0.5rem;
    border-radius: 9px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.mode-btn.active {
    background: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 0 12px var(--accent-glow);
}

.stepper-box {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
}

.step-btn {
    width: 44px;
    height: 42px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.step-btn svg {
    width: 16px;
    height: 16px;
}

.step-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.stepper-box input {
    flex: 1;
    background: transparent;
    border: none;
    color: #ffffff;
    font-size: 1.15rem;
    font-weight: 700;
    text-align: center;
    outline: none;
    font-family: var(--font-display);
    -moz-appearance: textfield;
}

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

.custom-select-wrap {
    position: relative;
}

.styled-select {
    width: 100%;
    padding: 0.65rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 0.88rem;
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s;
}

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

.styled-select option {
    background: #0d0e1f;
    color: #ffffff;
}

/* Primary Button */
.action-footer {
    padding-top: 0.25rem;
}

.primary-glow-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    padding: 1rem;
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #ffffff;
    border: none;
    border-radius: 14px;
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 20px var(--accent-glow);
    transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.primary-glow-btn svg {
    width: 22px;
    height: 22px;
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.5));
}

.primary-glow-btn:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow: 0 8px 30px var(--accent-glow);
    filter: brightness(1.1);
}

/* Results Panel */
.results-panel {
    padding: 1.75rem;
    min-height: 520px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
}

.results-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 1.25rem;
}

.results-meta h2 {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
}

.results-summary-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Export Buttons */
.export-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.export-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 0.45rem 0.85rem;
    border-radius: 10px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.export-btn svg {
    width: 15px;
    height: 15px;
}

.export-btn:hover {
    transform: translateY(-1px);
}

.export-btn.excel:hover {
    background: rgba(16, 185, 129, 0.15);
    border-color: var(--emerald);
    color: #34d399;
    box-shadow: 0 0 12px var(--emerald-glow);
}

.export-btn.pdf:hover {
    background: rgba(244, 63, 94, 0.15);
    border-color: var(--rose);
    color: #fb7185;
    box-shadow: 0 0 12px rgba(244, 63, 94, 0.35);
}

.export-btn.copy:hover,
.export-btn.shuffle:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--accent-color);
    color: #a5b4fc;
    box-shadow: 0 0 12px var(--accent-glow);
}

/* Empty State */
.empty-state-view {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 5rem 2rem;
    gap: 1rem;
    color: var(--text-secondary);
    max-width: 440px;
    margin: auto;
}

.empty-icon-wrap {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px dashed var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.empty-icon-wrap svg {
    width: 32px;
    height: 32px;
}

.empty-state-view h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--text-primary);
}

.empty-state-view p {
    font-size: 0.92rem;
    line-height: 1.6;
}

/* Shuffling Overlay */
.shuffling-overlay {
    position: absolute;
    inset: 0;
    background: rgba(5, 5, 16, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20;
    border-radius: 24px;
}

.shuffle-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.dice-box {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 0 25px var(--accent-glow);
    animation: rotateDice 0.75s infinite cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.dice-box svg {
    width: 30px;
    height: 30px;
}

@keyframes rotateDice {
    0% { transform: rotate(0deg) scale(0.9); }
    50% { transform: rotate(180deg) scale(1.15); }
    100% { transform: rotate(360deg) scale(0.9); }
}

.shuffle-text {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: #ffffff;
}

/* Groups Grid */
.groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
    width: 100%;
}

/* Group Card */
.group-card {
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
    animation: cardAppear 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) backwards;
}

@keyframes cardAppear {
    from { opacity: 0; transform: translateY(15px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.group-card:hover {
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
}

.group-card-header {
    background: rgba(255, 255, 255, 0.04);
    padding: 0.9rem 1.1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--glass-border);
}

.group-card-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: text;
    border-radius: 6px;
    padding: 2px 4px;
    outline: none;
    transition: background 0.2s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}

.group-card-title:hover {
    background: rgba(255, 255, 255, 0.08);
}

.group-card-title:focus {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--accent-color);
}

.header-meta {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.member-badge {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.08);
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
}

.card-copy-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 3px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s, background 0.2s;
}

.card-copy-btn svg {
    width: 14px;
    height: 14px;
}

.card-copy-btn:hover {
    color: var(--accent-color);
    background: rgba(99, 102, 241, 0.15);
}

/* Members List */
.group-members-list {
    list-style: none;
    padding: 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    min-height: 80px;
}

.member-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 0.55rem 0.75rem;
    border-radius: 10px;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all 0.2s;
}

.member-item:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--glass-border);
    transform: translateX(2px);
}

.member-index {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-muted);
    width: 18px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.member-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* AdSense Section */
.adsense-container {
    margin-top: 1rem;
    width: 100%;
    display: flex;
    justify-content: center;
}

.ad-placeholder {
    width: 100%;
    min-height: 90px;
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.ad-label {
    position: absolute;
    top: 6px;
    left: 14px;
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    opacity: 0.55;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--glass-border-focus);
    color: #ffffff;
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    font-size: 0.88rem;
    font-weight: 500;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 10000;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.hidden {
    display: none !important;
}

/* Print Friendly Styles */
@media print {
    body {
        background: #ffffff !important;
        color: #000000 !important;
    }
    .background-blobs,
    .setup-panel,
    .adsense-container,
    .app-header,
    .results-toolbar,
    #confetti-canvas,
    .card-copy-btn {
        display: none !important;
    }
    .main-content {
        display: block !important;
    }
    .results-panel {
        background: none !important;
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
    }
    .groups-grid {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 1.5rem !important;
        page-break-inside: auto;
    }
    .group-card {
        background: #ffffff !important;
        border: 2px solid #000000 !important;
        box-shadow: none !important;
        page-break-inside: avoid;
    }
    .group-card-header {
        background: #f0f0f0 !important;
        border-bottom: 2px solid #000000 !important;
        color: #000000 !important;
    }
    .group-card-title {
        color: #000000 !important;
    }
    .member-item {
        background: #ffffff !important;
        border: 1px solid #e0e0e0 !important;
        color: #000000 !important;
    }
}

/* Responsive adjustments */
@media (max-width: 980px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    .app-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}