/* ================================================
   Puzzle CAPTCHA — Clean Professional Theme
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600&display=swap');

:root {
    --cap-white:          #ffffff;
    --cap-bg:             #f8f9fb;
    --cap-surface:        #ffffff;
    --cap-border:         #e4e7ec;
    --cap-border-focus:   #3b6fff;
    --cap-text-primary:   #111827;
    --cap-text-secondary: #6b7280;
    --cap-text-hint:      #9ca3af;
    --cap-accent:         #3b6fff;
    --cap-accent-light:   #eff3ff;
    --cap-success:        #16a34a;
    --cap-success-bg:     #f0fdf4;
    --cap-error:          #dc2626;
    --cap-error-bg:       #fef2f2;
    --cap-warning-bg:     #fffbeb;
    --cap-warning-border: #fde68a;
    --cap-warning-text:   #92400e;
    --cap-overlay:        rgba(15, 23, 42, 0.55);
    --cap-radius-sm:      6px;
    --cap-radius-md:      10px;
    --cap-radius-lg:      14px;
    --cap-shadow-sm:      0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --cap-shadow-lg:      0 20px 48px rgba(0,0,0,0.14), 0 4px 12px rgba(0,0,0,0.06);
    --cap-font:           'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ── Overlay ─────────────────────────────────── */
.captcha-modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--cap-overlay);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: cap-fadeIn 0.25s ease;
    padding: 16px;
}

@keyframes cap-fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* ── Modal ───────────────────────────────────── */
.captcha-modal {
    background: var(--cap-surface);
    border-radius: var(--cap-radius-lg);
    box-shadow: var(--cap-shadow-lg);
    max-width: 380px;
    width: 100%;
    font-family: var(--cap-font);
    animation: cap-slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid var(--cap-border);
    overflow: hidden;
}

@keyframes cap-slideUp {
    from {
        transform: translateY(24px) scale(0.97);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

/* ── Header ──────────────────────────────────── */
.captcha-modal-header {
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--cap-border);
    background: var(--cap-surface);
}

.captcha-modal-header h3 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--cap-text-primary);
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.captcha-modal-header h3::before {
    content: '🔒';
    font-size: 13px;
}

.captcha-close {
    background: none;
    border: none;
    width: 28px;
    height: 28px;
    border-radius: var(--cap-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--cap-text-hint);
    font-size: 18px;
    line-height: 1;
    transition: background 0.15s, color 0.15s;
    padding: 0;
    flex-shrink: 0;
}

.captcha-close:hover {
    background: var(--cap-bg);
    color: var(--cap-text-secondary);
}

/* ── Body ────────────────────────────────────── */
.captcha-modal-body {
    padding: 20px;
    position: relative;
    background: var(--cap-bg);
}

.captcha-instruction {
    font-size: 13px;
    color: var(--cap-text-secondary);
    margin-bottom: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.captcha-instruction::before {
    content: '';
    display: inline-block;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--cap-accent);
    flex-shrink: 0;
}

/* ── Puzzle Container ────────────────────────── */
.captcha-puzzle-container {
    position: relative;
    width: 100%;
    height: 170px;
    margin-bottom: 14px;
    border-radius: var(--cap-radius-md);
    overflow: hidden;
    border: 1.5px solid var(--cap-border);
    background: var(--cap-white);
    box-shadow: var(--cap-shadow-sm);
}

.captcha-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.captcha-canvas-piece {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: 0;
    width: 60px;
    height: 60px;
    z-index: 10;
    cursor: grab;
    transition: left 0.3s ease;
    border-radius: var(--cap-radius-sm);
    box-shadow:
        0 0 0 2.5px rgba(255,255,255,0.95),
        0 4px 14px rgba(0,0,0,0.28);
}

.captcha-canvas-piece:active {
    cursor: grabbing;
}

/* ── Puzzle Slot ─────────────────────────────── */
.captcha-puzzle-slot {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    border: 2px dashed rgba(255,255,255,0.65);
    background: rgba(0,0,0,0.18);
    box-sizing: border-box;
    pointer-events: none;
    border-radius: var(--cap-radius-sm);
}

/* ── Refresh Button ──────────────────────────── */
.captcha-refresh {
    position: absolute;
    top: 14px;
    right: 14px;
    background: rgba(255,255,255,0.8);
    border: 1px solid rgba(255,255,255,0.4);
    border-radius: var(--cap-radius-sm);
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: rgba(255,255,255,0.9);
    transition: background 0.2s, color 0.2s;
    z-index: 100;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    padding: 0;
    line-height: 1;
}

.captcha-refresh:hover {
    background: rgba(255,255,255,0.96);
    color: var(--cap-accent);
}

.captcha-refresh-icon {
    display: inline-block;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    line-height: 1;
}

.captcha-refresh:hover .captcha-refresh-icon {
    transform: rotate(180deg);
}

/* ── Slider Track ────────────────────────────── */
.captcha-slider-track {
    width: 100%;
    height: 46px;
    background: var(--cap-white);
    border-radius: 999px;
    position: relative;
    margin-bottom: 14px;
    border: 1.5px solid var(--cap-border);
    overflow: hidden;
    box-shadow: var(--cap-shadow-sm);
}

/* ── Slider Fill ─────────────────────────────── */
.captcha-slider-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: linear-gradient(90deg, #dde7ff, #c7d6ff);
    width: 0;
    transition: width 0.08s linear;
}

.captcha-slider-fill.success {
    background: linear-gradient(90deg, #dcfce7, #bbf7d0);
}

.captcha-slider-fill.error {
    background: linear-gradient(90deg, #fee2e2, #fecaca);
}

/* ── Slider Button ───────────────────────────── */
.captcha-slider-button {
    position: absolute;
    top: 2px;
    left: 0;
    width: 42px;
    height: 40px;
    background: var(--cap-accent);
    border-radius: 999px;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(59,111,255,0.4), 0 1px 3px rgba(0,0,0,0.08);
    transition: background 0.15s, box-shadow 0.15s, transform 0.1s;
    z-index: 10;
    border: none;
}

.captcha-slider-button:hover {
    background: #2a5cff;
    box-shadow: 0 4px 16px rgba(59,111,255,0.5), 0 1px 4px rgba(0,0,0,0.1);
    transform: scale(1.05);
}

.captcha-slider-button:active {
    cursor: grabbing;
    transform: scale(0.96);
}

.captcha-slider-button.success {
    background: var(--cap-success);
    box-shadow: 0 2px 10px rgba(22,163,74,0.4);
    cursor: default;
    transform: none;
}

.captcha-slider-button.error {
    background: var(--cap-error);
    box-shadow: 0 2px 10px rgba(220,38,38,0.4);
    animation: cap-shake 0.45s cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

.captcha-slider-button.disabled {
    background: #d1d5db;
    box-shadow: none;
    cursor: not-allowed;
    opacity: 0.65;
    transform: none;
}

@keyframes cap-shake {
    0%,100% { transform: translateX(0); }
    20%      { transform: translateX(-6px); }
    40%      { transform: translateX(6px); }
    60%      { transform: translateX(-4px); }
    80%      { transform: translateX(4px); }
}

/* ── Slider Icon ─────────────────────────────── */
.captcha-slider-icon {
    color: #ffffff;
    font-size: 18px;
    font-weight: 700;
    line-height: 1;
    user-select: none;
}

/* ── Status Text ─────────────────────────────── */
.captcha-text {
    text-align: center;
    font-size: 13px;
    font-weight: 500;
    min-height: 18px;
    color: var(--cap-text-secondary);
    margin-bottom: 5px;
    transition: color 0.2s;
}

.captcha-text.success { color: var(--cap-success); }
.captcha-text.error   { color: var(--cap-error);   }

/* ── Hint Text ───────────────────────────────── */
.captcha-hint {
    font-size: 11.5px;
    color: var(--cap-text-hint);
    text-align: center;
    margin-top: 2px;
    letter-spacing: 0.01em;
}

/* ── Warning Banner ──────────────────────────── */
.captcha-warning {
    background: var(--cap-warning-bg);
    border: 1px solid var(--cap-warning-border);
    border-radius: var(--cap-radius-sm);
    padding: 8px 12px;
    margin: 10px 0 4px;
    font-size: 12px;
    font-weight: 500;
    color: var(--cap-warning-text);
    text-align: center;
}

/* ── Loading Spinner ─────────────────────────── */
.captcha-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 170px;
}

.captcha-loading::after {
    content: '';
    width: 28px;
    height: 28px;
    border: 2.5px solid var(--cap-border);
    border-top-color: var(--cap-accent);
    border-radius: 50%;
    animation: cap-spin 0.75s linear infinite;
}

@keyframes cap-spin {
    to { transform: rotate(360deg); }
}

/* ── Status Bar ──────────────────────────────── */
.captcha-status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0 0;
    border-top: 1px solid var(--cap-border);
    margin-top: 10px;
    font-size: 11px;
    color: var(--cap-text-hint);
}

/* ── Mobile ──────────────────────────────────── */
@media (max-width: 480px) {
    .captcha-modal {
        max-width: 100%;
        border-radius: var(--cap-radius-md);
    }
    .captcha-modal-body {
        padding: 16px;
    }
    .captcha-puzzle-container {
        height: 150px;
    }
}