/* ============================================
   Compound Interest Calculator — compound-interest.css
   ============================================ */

.ci-app { max-width: 100%; }

.ci-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.ci-card-title {
    font-size: 1.3rem; font-weight: 700; color: var(--text-primary);
    margin-bottom: 1.5rem; padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
    display: flex; align-items: center;
}

/* ---- Fields ---- */
.ci-field { margin-bottom: 1.75rem; }
.ci-field:last-child { margin-bottom: 0; }

.ci-field-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: .5rem;
}
.ci-field-header label {
    font-size: .9rem; font-weight: 600; color: var(--text-secondary);
}
.ci-field-value {
    font-size: 1.1rem; font-weight: 800; color: var(--brand-primary);
    font-family: 'JetBrains Mono', monospace;
}

.ci-field-hint {
    display: block; font-size: .75rem; color: var(--text-muted); margin-top: 6px;
}

/* Range Slider */
.ci-range {
    width: 100%; height: 6px; -webkit-appearance: none; appearance: none;
    background: var(--bg-tertiary); border-radius: 3px; outline: none;
    margin: 10px 0 4px;
}
.ci-range::-webkit-slider-thumb {
    -webkit-appearance: none; width: 22px; height: 22px; border-radius: 50%;
    background: #fff; border: 3px solid var(--brand-primary); cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,.15);
}
.ci-range::-moz-range-thumb {
    width: 22px; height: 22px; border-radius: 50%;
    background: #fff; border: 3px solid var(--brand-primary); cursor: pointer;
}
.ci-range-rate {
    background: linear-gradient(90deg, #10b981 0%, #f59e0b 50%, #ef4444 100%);
}

.ci-range-labels {
    display: flex; justify-content: space-between;
    font-size: .7rem; color: var(--text-muted); font-weight: 600;
    margin-bottom: 8px;
}

/* Input Row */
.ci-input-row {
    display: flex; align-items: center; gap: 8px;
}

.ci-input {
    flex: 1; padding: 10px 14px; font-size: 1rem; font-weight: 600;
    color: var(--text-primary); background: var(--bg-input);
    border: 2px solid var(--border-color); border-radius: var(--radius-md);
    outline: none; transition: border-color .2s; box-sizing: border-box;
    font-family: 'JetBrains Mono', monospace;
}
.ci-input:focus { border-color: var(--brand-primary); box-shadow: 0 0 0 3px rgba(6,182,212,.1); }

.ci-input-prefix, .ci-input-suffix {
    font-size: .9rem; font-weight: 700; color: var(--text-muted); white-space: nowrap;
}

/* Quick Buttons */
.ci-quick-btns { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }

.ci-quick-btn {
    padding: 6px 14px; font-size: .8rem; font-weight: 700;
    color: var(--text-secondary); background: var(--bg-secondary);
    border: 2px solid var(--border-color); border-radius: var(--radius-md);
    cursor: pointer; transition: all .15s;
}
.ci-quick-btn:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.ci-quick-active {
    background: var(--brand-primary) !important;
    border-color: var(--brand-primary) !important;
    color: #fff !important;
}

/* Frequency Buttons */
.ci-freq-btns { display: flex; gap: 6px; flex-wrap: wrap; }

.ci-freq-btn {
    padding: 10px 18px; font-size: .85rem; font-weight: 700;
    color: var(--text-secondary); background: var(--bg-secondary);
    border: 2px solid var(--border-color); border-radius: var(--radius-md);
    cursor: pointer; transition: all .15s; flex: 1; text-align: center;
}
.ci-freq-btn:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.ci-freq-active {
    background: var(--brand-primary) !important;
    border-color: var(--brand-primary) !important;
    color: #fff !important;
}

/* Calculate Button */
.ci-calculate-btn {
    width: 100%; padding: 16px; font-size: 1.15rem; font-weight: 700;
    color: #fff; border: none; border-radius: var(--radius-lg); cursor: pointer;
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
    box-shadow: 0 4px 15px rgba(6,182,212,.25);
    transition: all .2s; display: flex; align-items: center; justify-content: center;
    margin-top: 1.5rem;
}
.ci-calculate-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(6,182,212,.4); }

/* ---- Results ---- */
.ci-result-hero {
    text-align: center; margin-bottom: 2rem;
    padding: 2rem; background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
    border: 2px solid var(--border-color); border-radius: var(--radius-lg);
}
.ci-result-main { margin-bottom: 10px; }
.ci-result-label {
    display: block; font-size: .85rem; font-weight: 600;
    color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em;
    margin-bottom: 4px;
}
.ci-result-amount {
    font-size: 3.5rem; font-weight: 900; line-height: 1;
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.ci-result-sub {
    font-size: .9rem; color: var(--text-muted); margin-top: 8px;
}
.ci-result-sub strong { color: var(--text-primary); }

/* Stats Grid */
.ci-stats-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
    margin-bottom: 2rem;
}

.ci-stat-box {
    display: flex; align-items: center; gap: 14px; padding: 16px;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius-lg); transition: transform .2s;
}
.ci-stat-box:hover { transform: translateY(-2px); }

.ci-stat-icon {
    width: 46px; height: 46px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; flex-shrink: 0;
}
.ci-stat-cyan .ci-stat-icon { background: rgba(6,182,212,.12); color: #06b6d4; }
.ci-stat-blue .ci-stat-icon { background: rgba(59,130,246,.12); color: #3b82f6; }
.ci-stat-green .ci-stat-icon { background: rgba(16,185,129,.12); color: #10b981; }
.ci-stat-amber .ci-stat-icon { background: rgba(245,158,11,.12); color: #f59e0b; }
.ci-stat-purple .ci-stat-icon { background: rgba(139,92,246,.12); color: #8b5cf6; }
.ci-stat-rose .ci-stat-icon { background: rgba(236,72,153,.12); color: #ec4899; }

.ci-stat-data { display: flex; flex-direction: column; }
.ci-stat-num { font-size: 1.15rem; font-weight: 800; color: var(--text-primary); line-height: 1.1; }
.ci-stat-label { font-size: .7rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em; margin-top: 3px; }

/* ---- Charts ---- */
.ci-chart-section { margin-bottom: 2rem; }
.ci-section-title { font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 1rem; }

/* Pie Chart */
.ci-pie-container {
    display: flex; align-items: center; gap: 2rem; justify-content: center;
    flex-wrap: wrap;
}
#ciPieChart { max-width: 280px; }

.ci-pie-legend { display: flex; flex-direction: column; gap: 12px; }
.ci-legend-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 16px; background: var(--bg-secondary);
    border: 1px solid var(--border-color); border-radius: var(--radius-md);
}
.ci-legend-dot { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; }
.ci-legend-text { font-size: .85rem; font-weight: 600; color: var(--text-secondary); min-width: 90px; }
.ci-legend-value { font-size: .9rem; font-weight: 800; color: var(--text-primary); font-family: 'JetBrains Mono', monospace; }
.ci-legend-pct { font-size: .75rem; font-weight: 700; color: var(--text-muted); }

/* Chart Container */
.ci-chart-container {
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: var(--radius-lg); padding: 16px; height: 280px;
}

/* ---- Power Grid ---- */
.ci-power-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
.ci-power-item {
    text-align: center; padding: 16px;
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}
.ci-power-label {
    display: block; font-size: .75rem; font-weight: 600;
    color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em;
    margin-bottom: 6px;
}
.ci-power-value {
    font-size: 1.3rem; font-weight: 900; color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
}

/* ---- Tables ---- */
.ci-table-wrap {
    overflow-x: auto; border: 1px solid var(--border-color);
    border-radius: var(--radius-md); max-height: 400px; overflow-y: auto;
}

.ci-table {
    width: 100%; border-collapse: collapse; font-size: .85rem;
}
.ci-table th {
    padding: 12px 14px; background: var(--bg-secondary);
    font-weight: 700; color: var(--text-secondary); text-align: left;
    border-bottom: 2px solid var(--border-color);
    font-size: .75rem; text-transform: uppercase; letter-spacing: .04em;
    position: sticky; top: 0; z-index: 1;
}
.ci-table td {
    padding: 10px 14px; border-bottom: 1px solid var(--border-color);
    color: var(--text-primary); font-family: 'JetBrains Mono', monospace;
    font-size: .8rem;
}
.ci-table tbody tr:hover { background: rgba(6,182,212,.03); }
.ci-table tbody tr:last-child td { border-bottom: none; }

/* ---- Actions ---- */
.ci-actions { display: flex; justify-content: center; gap: 12px; margin-top: 1.5rem; }

.ci-action-btn {
    padding: 12px 28px; font-size: 1rem; font-weight: 700;
    border: none; border-radius: var(--radius-lg); cursor: pointer;
    transition: all .2s; display: flex; align-items: center;
}
.ci-action-primary {
    color: #fff;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    box-shadow: 0 4px 15px rgba(239,68,68,.25);
}
.ci-action-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(239,68,68,.4); }
.ci-action-secondary {
    color: var(--text-secondary); background: var(--bg-secondary);
    border: 2px solid var(--border-color);
}
.ci-action-secondary:hover { border-color: var(--brand-primary); color: var(--brand-primary); }

/* ---- Comparison ---- */
.ci-compare-hint { font-size: .85rem; color: var(--text-muted); margin-bottom: 1rem; }
.ci-compare-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px; margin-bottom: 1rem;
}
.ci-compare-item {
    padding: 16px; background: var(--bg-secondary);
    border: 2px solid var(--border-color); border-radius: var(--radius-lg);
    text-align: center;
}
.ci-compare-item-title {
    font-size: .75rem; font-weight: 700; color: var(--brand-primary);
    text-transform: uppercase; letter-spacing: .04em; margin-bottom: 8px;
}
.ci-compare-item-amount {
    font-size: 1.8rem; font-weight: 900; color: var(--text-primary); margin-bottom: 4px;
}
.ci-compare-item-sub { font-size: .75rem; color: var(--text-muted); font-weight: 600; }
.ci-compare-item-details {
    display: flex; flex-direction: column; gap: 4px; margin-top: 10px;
    font-size: .78rem; color: var(--text-secondary);
}
.ci-compare-item-row { display: flex; justify-content: space-between; }
.ci-compare-item-row span:last-child {
    font-weight: 700; font-family: 'JetBrains Mono', monospace;
}

.ci-clear-compare-btn {
    padding: 6px 16px; font-size: .8rem; font-weight: 600;
    color: var(--text-muted); background: transparent;
    border: 1px solid var(--border-color); border-radius: var(--radius-md);
    cursor: pointer; transition: all .15s;
}
.ci-clear-compare-btn:hover { border-color: #ef4444; color: #ef4444; }

/* ---- Share ---- */
.ci-share-section { text-align: center; }
.ci-share-note { font-size: .85rem; color: var(--text-muted); margin-bottom: 12px; }
.ci-share-row { display: flex; justify-content: center; gap: 10px; }
.ci-share-btn {
    width: 44px; height: 44px; border-radius: 50%; border: none;
    color: #fff; font-size: 1.1rem; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all .2s;
}
.ci-share-btn:hover { transform: translateY(-3px); box-shadow: 0 4px 12px rgba(0,0,0,.2); }

/* ---- Tips ---- */
.ci-tips-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }

.ci-tip-item {
    display: flex; align-items: flex-start; gap: 12px; padding: 14px;
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}
.ci-tip-icon {
    width: 42px; height: 42px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem; flex-shrink: 0;
    background: color-mix(in srgb, var(--tip-color) 12%, transparent);
    color: var(--tip-color);
}
.ci-tip-text { display: flex; flex-direction: column; }
.ci-tip-text strong { font-size: .85rem; color: var(--text-primary); margin-bottom: 2px; }
.ci-tip-text span { font-size: .75rem; color: var(--text-muted); line-height: 1.4; }

/* ---- Info & FAQ ---- */
.ci-info-block {
    padding: 1.25rem; background: var(--bg-secondary); border-radius: var(--radius-md);
    margin-bottom: 1rem; border-left: 4px solid var(--brand-primary);
}
.ci-info-block:last-child { margin-bottom: 0; }
.ci-info-block h3 { font-size: 1.05rem; font-weight: 700; color: var(--text-primary); margin-bottom: .5rem; }
.ci-info-block p { font-size: .95rem; color: var(--text-secondary); margin-bottom: 0; line-height: 1.6; }

.ci-faq-item { padding: 1.25rem; background: var(--bg-secondary); border-radius: var(--radius-md); margin-bottom: 1rem; }
.ci-faq-item:last-child { margin-bottom: 0; }
.ci-faq-item h3 { font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: .5rem; }
.ci-faq-item p { font-size: .95rem; color: var(--text-secondary); margin-bottom: 0; line-height: 1.6; }

/* ---- Responsive ---- */
@media (max-width: 991.98px) {
    .ci-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .ci-power-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767.98px) {
    .ci-card { padding: 1.25rem; }
    .ci-stats-grid { grid-template-columns: 1fr; }
    .ci-tips-grid { grid-template-columns: 1fr; }
    .ci-result-amount { font-size: 2.5rem; }
    .ci-pie-container { flex-direction: column; }
    .ci-actions { flex-direction: column; }
    .ci-action-btn { width: 100%; justify-content: center; }
    .ci-freq-btns { flex-wrap: wrap; }
    .ci-freq-btn { flex: 0 0 auto; }
    .ci-power-grid { grid-template-columns: repeat(2, 1fr); }
    .ci-compare-grid { grid-template-columns: 1fr; }
}


/* ---- How to Use Steps ---- */
.ci-steps-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }

.ci-step-item {
    display: flex; align-items: flex-start; gap: 14px; padding: 16px;
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: var(--radius-md); transition: all .15s;
}
.ci-step-item:hover { border-color: rgba(6,182,212,.3); }

.ci-step-num {
    width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: .95rem; font-weight: 800; color: #fff;
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
}

.ci-step-content { display: flex; flex-direction: column; }
.ci-step-content strong { font-size: .9rem; color: var(--text-primary); margin-bottom: 3px; }
.ci-step-content span { font-size: .8rem; color: var(--text-muted); line-height: 1.5; }

@media (max-width: 767.98px) {
    .ci-steps-grid { grid-template-columns: 1fr; }
}