/* ==========================================================================
   Reusable UI Components
   All colors use CSS variables — dark mode auto-switches.
   ========================================================================== */

/* ==========================================================================
   1. Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(var(--color-primary-rgb), 0.4);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-primary-rgb), 0.5);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(var(--color-secondary-rgb), 0.4);
}
.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-secondary-rgb), 0.5);
}

.btn-accent {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: var(--color-text);
    box-shadow: 0 4px 15px rgba(var(--color-accent-rgb), 0.4);
}
.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-accent-rgb), 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}
.btn-outline:hover {
    background: var(--color-primary);
    color: white;
}

.btn-icon  { width: 48px; height: 48px; padding: 0; border-radius: 50%; }
.btn-icon-sm { width: 36px; height: 36px; padding: 0; border-radius: 50%; font-size: 14px; }

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-loading { pointer-events: none; }
.btn-loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 8px;
}

/* ==========================================================================
   2. Cards
   ========================================================================== */
.card {
    background: var(--color-card);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 20px rgba(var(--color-text-rgb), 0.08);
    transition: all 0.3s ease;
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(var(--color-text-rgb), 0.12);
}

.card-game {
    position: relative;
    padding-left: 28px;
}
.card-game::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background: var(--color-primary);
    border-radius: 4px 0 0 4px;
    transition: all 0.3s ease;
}
.card-game:hover::before {
    width: 6px;
    background: var(--color-secondary);
}

.card-stat {
    text-align: center;
    padding: 16px;
    min-width: 100px;
}
.card-stat .stat-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-light);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.card-stat .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
}

.card-result {
    text-align: center;
    padding: 24px;
}
.card-result.winner {
    background: linear-gradient(135deg, rgba(var(--color-secondary-rgb), 0.1) 0%, rgba(var(--color-secondary-rgb), 0.2) 100%);
    border: 2px solid var(--color-secondary);
}
.card-result.loser {
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.1) 0%, rgba(var(--color-primary-rgb), 0.2) 100%);
    border: 2px solid var(--color-primary);
}
.card-result.draw {
    background: linear-gradient(135deg, rgba(var(--color-accent-rgb), 0.1) 0%, rgba(var(--color-accent-rgb), 0.2) 100%);
    border: 2px solid var(--color-accent);
}

/* ==========================================================================
   3. Inputs
   ========================================================================== */
.input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--color-bg-alt);
    border-radius: 12px;
    font-family: var(--font-display);
    font-size: 16px;
    color: var(--color-text);
    background: var(--color-card);
    transition: all 0.3s ease;
}
.input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.15);
}
.input::placeholder {
    color: var(--color-text-lighter);
}

.input-number {
    font-family: var(--font-mono);
    text-align: center;
    font-size: 24px;
    letter-spacing: 4px;
}

.input-error {
    border-color: var(--color-primary);
}
.input-error:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.2);
}

/* ==========================================================================
   4. Badges
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-win     { background: rgba(var(--color-secondary-rgb), 0.2); color: var(--color-secondary-dark); }
.badge-lose    { background: rgba(var(--color-error-rgb), 0.2);    color: var(--color-error); }
.badge-draw    { background: rgba(var(--color-accent-rgb), 0.2);   color: var(--color-accent-dark); }
.badge-success { background: rgba(var(--color-secondary-rgb), 0.2); color: var(--color-secondary-dark); }
.badge-tip     { background: rgba(var(--color-primary-rgb), 0.15); color: var(--color-primary); }

/* ==========================================================================
   5. History Items
   ========================================================================== */
.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: var(--color-card);
    border-radius: 10px;
    margin-bottom: 8px;
    box-shadow: 0 2px 8px rgba(var(--color-text-rgb), 0.06);
    transition: all 0.3s ease;
}
.history-item:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(var(--color-text-rgb), 0.1);
}
.history-item .history-number {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
}
.history-item .history-result {
    font-size: 14px;
    color: var(--color-text-light);
}
.history-item .history-arrow { font-size: 16px; }
.history-item.high .history-number   { color: var(--color-primary); }
.history-item.high .history-arrow    { color: var(--color-primary); }
.history-item.low .history-number    { color: var(--color-secondary); }
.history-item.low .history-arrow     { color: var(--color-secondary); }

/* ==========================================================================
   6. Choice Components
   ========================================================================== */
.choice-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px;
    background: var(--color-card);
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(var(--color-text-rgb), 0.08);
}
.choice-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(var(--color-text-rgb), 0.12);
}
.choice-btn:active { transform: translateY(-2px); }

.choice-emoji-lg {
    width: 80px;
    height: 80px;
    margin-bottom: 12px;
}
.choice-emoji-lg svg {
    width: 100%;
    height: 100%;
    transition: transform 0.3s ease;
}
.choice-btn:hover .choice-emoji-lg svg { transform: scale(1.1); }

.choice-name {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

/* ==========================================================================
   7. Result Display
   ========================================================================== */
.result-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    margin-bottom: 20px;
}

.player-choice,
.computer-choice { text-align: center; }

.choice-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.choice-emoji { width: 100px; height: 100px; }

.vs {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-accent);
}

.result-text {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    padding: 16px;
    border-radius: 12px;
}
.result-text.win  { color: var(--color-secondary-dark); background: rgba(var(--color-secondary-rgb), 0.15); }
.result-text.lose { color: var(--color-primary);       background: rgba(var(--color-primary-rgb), 0.15); }
.result-text.draw { color: var(--color-accent-dark);    background: rgba(var(--color-accent-rgb), 0.15); }

/* ==========================================================================
   8. Tips
   ========================================================================== */
.tip {
    padding: 16px 20px;
    border-radius: 12px;
    font-size: 16px;
    text-align: center;
    transition: all 0.3s ease;
}
.tip-info {
    background: rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-primary);
    border-left: 4px solid var(--color-primary);
}
.tip-success {
    background: rgba(var(--color-secondary-rgb), 0.1);
    color: var(--color-secondary-dark);
    border-left: 4px solid var(--color-secondary);
}
.tip-warning {
    background: rgba(var(--color-accent-rgb), 0.1);
    color: var(--color-accent-dark);
    border-left: 4px solid var(--color-accent);
}

/* ==========================================================================
   9. Stats
   ========================================================================== */
.stats-area {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    min-width: 80px;
}

.stat-label {
    display: block;
    font-size: 11px;
    color: var(--color-text-lighter);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
    font-family: var(--font-mono);
}
.stat-value.win  { color: var(--color-secondary); }
.stat-value.draw { color: var(--color-accent); }
.stat-value.lose { color: var(--color-primary); }

/* ==========================================================================
   10. Icon Containers
   ========================================================================== */
.icon-circle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-primary);
}
.icon-circle-sm { width: 32px; height: 32px; font-size: 16px; }
.icon-circle-lg { width: 64px; height: 64px; font-size: 28px; }

/* ==========================================================================
   11. Layout
   ========================================================================== */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-gap-sm { gap: 8px; }
.flex-gap-md { gap: 16px; }
.flex-gap-lg { gap: 24px; }

.grid   { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

/* ==========================================================================
   12. Spacing
   ========================================================================== */
.mt-sm { margin-top: 8px; }
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 24px; }
.mt-xl { margin-top: 32px; }
.mb-sm { margin-bottom: 8px; }
.mb-md { margin-bottom: 16px; }
.mb-lg { margin-bottom: 24px; }
.mb-xl { margin-bottom: 32px; }
.p-sm  { padding: 8px; }
.p-md  { padding: 16px; }
.p-lg  { padding: 24px; }
.p-xl  { padding: 32px; }

/* ==========================================================================
   13. Typography
   ========================================================================== */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }
.text-sm  { font-size: 12px; }
.text-md  { font-size: 16px; }
.text-lg  { font-size: 20px; }
.text-xl  { font-size: 24px; }
.text-2xl { font-size: 32px; }
.font-bold      { font-weight: 700; }
.font-semibold  { font-weight: 600; }
.font-medium    { font-weight: 500; }
.text-primary   { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-accent    { color: var(--color-accent); }
.text-muted     { color: var(--color-text-lighter); }

/* ==========================================================================
   14. Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .btn    { padding: 10px 20px; font-size: 14px; }
    .btn-icon { width: 40px; height: 40px; }
    .card   { padding: 16px; }
    .input  { padding: 12px 16px; font-size: 16px; }
    .input-number { font-size: 20px; }
    .stats-area { gap: 16px; }
    .stat-value { font-size: 20px; }
    .result-display { gap: 16px; }
    .choice-emoji-lg { width: 64px; height: 64px; }
    .flex-gap-md { gap: 12px; }
    .flex-gap-lg { gap: 16px; }
}