/* ============================================
   DESIGN TOKENS
   ============================================ */
:root {
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Color Palette */
    --bg: #0f0f1a;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --bg-input: rgba(255, 255, 255, 0.07);
    --bg-input-focus: rgba(255, 255, 255, 0.1);

    --text: #f0f0f5;
    --text-muted: #9d9db5;
    --text-dim: #6b6b85;

    --accent: #7c5cfc;
    --accent-hover: #9477ff;
    --accent-glow: rgba(124, 92, 252, 0.3);

    --green: #34d399;
    --green-bg: rgba(52, 211, 153, 0.1);

    --red: #f87171;
    --red-bg: rgba(248, 113, 113, 0.1);

    --orange: #fb923c;
    --cyan: #22d3ee;
    --pink: #f472b6;
    --yellow: #facc15;
    --indigo: #818cf8;
    --teal: #2dd4bf;

    --border: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(124, 92, 252, 0.5);

    --radius: 14px;
    --radius-sm: 10px;
    --radius-xs: 8px;

    --shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.3);

    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Group color palette */
.group-color-0 {
    --group-accent: #7c5cfc;
    --group-bg: rgba(124, 92, 252, 0.08);
    --group-border: rgba(124, 92, 252, 0.2);
}

.group-color-1 {
    --group-accent: #34d399;
    --group-bg: rgba(52, 211, 153, 0.08);
    --group-border: rgba(52, 211, 153, 0.2);
}

.group-color-2 {
    --group-accent: #fb923c;
    --group-bg: rgba(251, 146, 60, 0.08);
    --group-border: rgba(251, 146, 60, 0.2);
}

.group-color-3 {
    --group-accent: #22d3ee;
    --group-bg: rgba(34, 211, 238, 0.08);
    --group-border: rgba(34, 211, 238, 0.2);
}

.group-color-4 {
    --group-accent: #f472b6;
    --group-bg: rgba(244, 114, 182, 0.08);
    --group-border: rgba(244, 114, 182, 0.2);
}

.group-color-5 {
    --group-accent: #facc15;
    --group-bg: rgba(250, 204, 21, 0.08);
    --group-border: rgba(250, 204, 21, 0.2);
}

.group-color-6 {
    --group-accent: #818cf8;
    --group-bg: rgba(129, 140, 248, 0.08);
    --group-border: rgba(129, 140, 248, 0.2);
}

.group-color-7 {
    --group-accent: #2dd4bf;
    --group-bg: rgba(45, 212, 191, 0.08);
    --group-border: rgba(45, 212, 191, 0.2);
}

/* ============================================
   RESET & BASE
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100dvh;
    overflow-x: hidden;
    position: relative;
}

/* ============================================
   ANIMATED BACKGROUND
   ============================================ */
.bg-blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
    animation: float 20s ease-in-out infinite;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    top: -10%;
    right: -10%;
    animation-delay: 0s;
}

.blob-2 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--pink) 0%, transparent 70%);
    bottom: 10%;
    left: -10%;
    animation-delay: -7s;
}

.blob-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--cyan) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -40px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }

    75% {
        transform: translate(15px, 30px) scale(1.03);
    }
}

/* ============================================
   LAYOUT
   ============================================ */
.app-container {
    position: relative;
    z-index: 1;
    max-width: 580px;
    margin: 0 auto;
    padding: 24px 16px 32px;
}

/* ============================================
   HEADER
   ============================================ */
.app-header {
    text-align: center;
    margin-bottom: 28px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}

.logo-icon {
    font-size: 2rem;
    animation: dice-spin 3s ease-in-out infinite;
}

@keyframes dice-spin {

    0%,
    100% {
        transform: rotate(0deg) scale(1);
    }

    25% {
        transform: rotate(-10deg) scale(1.1);
    }

    75% {
        transform: rotate(10deg) scale(1.1);
    }
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent) 0%, var(--pink) 50%, var(--cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 400;
}

/* ============================================
   CARD
   ============================================ */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
    transition: background var(--transition);
}

.card:hover {
    background: var(--bg-card-hover);
}

.card-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.card-icon {
    font-size: 1.2rem;
}

/* ============================================
   INPUTS
   ============================================ */
.name-input-row {
    display: flex;
    gap: 8px;
}

.text-input,
.text-area {
    flex: 1;
    background: var(--bg-input);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 0.95rem;
    font-family: var(--font);
    color: var(--text);
    outline: none;
    transition: all var(--transition);
    width: 100%;
}

.text-input:focus,
.text-area:focus {
    background: var(--bg-input-focus);
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.text-input::placeholder,
.text-area::placeholder {
    color: var(--text-dim);
}

.text-area {
    resize: vertical;
    min-height: 100px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-add {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: var(--accent);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 1.4rem;
}

.btn-add:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

.btn-add:active {
    transform: scale(0.95);
}

.btn-secondary {
    background: var(--bg-input);
    color: var(--text);
    border: 1.5px solid var(--border);
    padding: 10px 20px;
    font-size: 0.85rem;
    margin-top: 8px;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, #a855f7 100%);
    color: white;
    padding: 16px 32px;
    font-size: 1.1rem;
    border-radius: var(--radius);
    box-shadow: 0 4px 20px var(--accent-glow);
    width: 100%;
    margin-bottom: 16px;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--accent-glow);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

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

.btn-outline {
    background: transparent;
    color: var(--text-muted);
    border: 1.5px solid var(--border);
    padding: 8px 16px;
    font-size: 0.8rem;
}

.btn-outline:hover {
    color: var(--text);
    border-color: var(--text-muted);
    background: var(--bg-input);
}

.btn-sm {
    border-radius: var(--radius-xs);
}

.btn-link {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 0;
    transition: color var(--transition);
}

.btn-link:hover {
    color: var(--accent);
}

.btn-danger {
    color: var(--red);
}

.btn-danger:hover {
    color: #fca5a5;
}

.btn-icon {
    font-size: 1.3rem;
}

.btn-shuffle {
    position: relative;
    overflow: hidden;
}

.btn-shuffle::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.1) 50%, transparent 100%);
    transform: translateX(-100%);
    transition: none;
}

.btn-shuffle:hover:not(:disabled)::before {
    animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    100% {
        transform: translateX(100%);
    }
}

/* ============================================
   BULK AREA
   ============================================ */
.bulk-toggle {
    margin-top: 12px;
}

.bulk-area {
    margin-top: 12px;
}

/* ============================================
   NAME TAGS
   ============================================ */
.name-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.name-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 6px 8px 6px 14px;
    font-size: 0.85rem;
    font-weight: 500;
    animation: tag-in 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes tag-in {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.name-tag .remove-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: rgba(255, 255, 255, 0.06);
    border: none;
    border-radius: 50%;
    color: var(--text-dim);
    cursor: pointer;
    font-size: 0.75rem;
    transition: all var(--transition);
    line-height: 1;
}

.name-tag .remove-btn:hover {
    background: var(--red-bg);
    color: var(--red);
}

/* ============================================
   NAME COUNT
   ============================================ */
.name-count {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ============================================
   MODE TOGGLE
   ============================================ */
.mode-toggle {
    display: flex;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 4px;
    gap: 4px;
    margin-bottom: 16px;
}

.mode-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-radius: var(--radius-xs);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-dim);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.mode-btn:hover {
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.03);
}

.mode-btn.active {
    background: var(--accent);
    color: white;
    box-shadow: 0 2px 8px var(--accent-glow);
}

.mode-btn svg {
    flex-shrink: 0;
}

/* ============================================
   SETTINGS
   ============================================ */
.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.setting-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
}

.stepper {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 4px;
}

.stepper-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: var(--radius-xs);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.stepper-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
}

.stepper-btn:active {
    transform: scale(0.9);
}

.stepper-input {
    width: 50px;
    text-align: center;
    background: transparent;
    border: none;
    color: var(--text);
    font-family: var(--font);
    font-size: 1.1rem;
    font-weight: 700;
    outline: none;
    -moz-appearance: textfield;
}

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

.group-info {
    margin-top: 12px;
    font-size: 0.82rem;
    color: var(--text-dim);
    text-align: center;
}

/* ============================================
   RESULTS
   ============================================ */
.results-section {
    margin-bottom: 24px;
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.results-header .card-title {
    margin-bottom: 0;
}

.results-grid {
    display: grid;
    gap: 12px;
}

.group-card {
    background: var(--group-bg);
    border: 1px solid var(--group-border);
    border-radius: var(--radius);
    padding: 16px;
    animation: card-in 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
}

.group-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.group-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: var(--group-accent);
    color: white;
    font-weight: 800;
    font-size: 0.85rem;
}

.group-name {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text);
}

.group-count {
    font-size: 0.78rem;
    color: var(--text-dim);
    margin-left: auto;
}

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

.member-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-xs);
    font-size: 0.88rem;
    font-weight: 500;
    transition: background var(--transition);
}

.member-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.member-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--group-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

@keyframes card-in {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.96);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ============================================
   FOOTER
   ============================================ */
.app-footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 16px;
    font-size: 0.75rem;
    color: var(--text-dim);
}

/* ============================================
   UTILITIES
   ============================================ */
.hidden {
    display: none !important;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 480px) {
    .app-container {
        padding: 16px 12px 24px;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .card {
        padding: 16px;
    }

    .btn-primary {
        padding: 14px 24px;
        font-size: 1rem;
    }

    .setting-row {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .stepper {
        justify-content: center;
    }
}

@media (min-width: 768px) {
    .app-container {
        padding: 40px 24px 48px;
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   ANIMATION: SHUFFLE
   ============================================ */
.shuffling .btn-icon {
    animation: dice-roll 0.6s ease-in-out;
}

@keyframes dice-roll {
    0% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(90deg);
    }

    50% {
        transform: rotate(180deg);
    }

    75% {
        transform: rotate(270deg);
    }

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

/* Confetti container */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 100;
    overflow: hidden;
}

.confetti-piece {
    position: absolute;
    top: -10px;
    width: 10px;
    height: 10px;
    border-radius: 2px;
    animation: confetti-fall 2s ease-out forwards;
}

@keyframes confetti-fall {
    0% {
        opacity: 1;
        transform: translateY(0) rotate(0deg);
    }

    100% {
        opacity: 0;
        transform: translateY(100vh) rotate(720deg);
    }
}