/* ===== ESTIMATION PAGE ===== */
.estimation-page {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.estimation-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow), var(--glass-inset);
    border-radius: var(--radius);
    padding: 20px;
    transition: all var(--transition);
}

.estimation-card:hover {
    border-color: rgba(255, 255, 255, 0.1);
}

.estimation-card-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    letter-spacing: -0.2px;
}

.estimation-card-title .card-icon {
    font-size: 1.15rem;
}

.estimation-card-subtitle {
    font-size: 0.73rem;
    color: var(--text-muted);
    margin-top: -10px;
    margin-bottom: 14px;
    line-height: 1.5;
}

/* ── Sport rows ── */
.est-sport-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: 10px;
    margin-bottom: 6px;
    transition: background var(--transition);
}

.est-sport-row:hover {
    background: rgba(255, 255, 255, 0.03);
}

.est-sport-icon {
    font-size: 1.3rem;
    width: 34px;
    text-align: center;
    flex-shrink: 0;
}

.est-sport-info {
    flex: 1;
    min-width: 0;
}

.est-sport-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.est-sport-dist {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 1px;
}

.est-sport-input {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.est-sport-input input {
    width: 78px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 6px 8px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-primary);
    transition: border-color var(--transition);
}

.est-sport-input input:focus {
    border-color: rgba(99, 102, 241, 0.5);
    outline: none;
}

.est-sport-input .est-unit {
    font-size: 0.7rem;
    color: var(--text-muted);
    min-width: 45px;
}

.est-sport-result {
    font-size: 1.05rem;
    font-weight: 700;
    min-width: 70px;
    text-align: right;
    flex-shrink: 0;
    letter-spacing: -0.3px;
}

.est-sport-result.swim-color     { color: var(--swim); }
.est-sport-result.bike-color     { color: var(--bike); }
.est-sport-result.run-color      { color: var(--run); }

/* ── Transition rows ── */
.est-transition-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 14px;
    margin-bottom: 4px;
}

.est-transition-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    flex: 1;
}

.est-transition-input input {
    width: 60px;
    text-align: center;
    font-size: 0.82rem;
    padding: 4px 6px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    color: var(--text-primary);
    transition: border-color var(--transition);
}

.est-transition-input input:focus {
    border-color: rgba(99, 102, 241, 0.5);
    outline: none;
}

.est-transition-result {
    font-size: 0.82rem;
    color: var(--text-secondary);
    min-width: 70px;
    text-align: right;
    font-weight: 500;
}

/* ── Separator ── */
.est-separator {
    border: none;
    border-top: 1px solid rgba(99, 102, 241, 0.2);
    margin: 10px 0;
}

/* ── Total ── */
.est-total {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: rgba(99, 102, 241, 0.07);
    border: 1px solid rgba(99, 102, 241, 0.18);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
}

.est-total::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 0% 50%, rgba(99, 102, 241, 0.1), transparent 70%);
    pointer-events: none;
}

.est-total-label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.est-total-value {
    font-size: 1.7rem;
    font-weight: 800;
    background: var(--accent-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

/* ── AI estimation card ── */
.est-ai-card {
    border-color: rgba(99, 102, 241, 0.2);
}

.est-ai-badge {
    font-size: 0.63rem;
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-hover);
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.est-ai-sport {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    margin-bottom: 4px;
    border-radius: 8px;
    transition: background var(--transition);
}

.est-ai-sport:hover {
    background: rgba(255, 255, 255, 0.02);
}

.est-ai-sport-icon {
    font-size: 1.1rem;
    width: 26px;
    text-align: center;
}

.est-ai-sport-info {
    flex: 1;
}

.est-ai-pace {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
}

.est-ai-detail {
    font-size: 0.67rem;
    color: var(--text-muted);
    margin-top: 1px;
}

.est-ai-time {
    font-size: 0.95rem;
    font-weight: 700;
    min-width: 65px;
    text-align: right;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.est-ai-notice {
    font-size: 0.7rem;
    color: var(--text-muted);
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.015);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    margin-top: 10px;
    line-height: 1.6;
}

.est-no-data {
    text-align: center;
    padding: 24px;
    color: var(--text-muted);
    font-size: 0.84rem;
}

/* ── Comparison bar ── */
.est-comparison {
    display: flex;
    gap: 16px;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--glass-border);
}

.est-comparison-item {
    flex: 1;
    text-align: center;
    padding: 10px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
    border: 1px solid var(--glass-border);
}

.est-comparison-label {
    font-size: 0.66rem;
    color: var(--text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    font-weight: 600;
}

.est-comparison-value {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

/* ── Method box ── */
.est-method-box {
    margin-top: 12px;
    padding: 14px 16px;
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.12);
    border-radius: 10px;
    position: relative;
    animation: fadeIn 0.2s ease;
}

.est-method-title {
    font-size: 0.83rem;
    font-weight: 700;
    color: var(--accent-hover);
    margin-bottom: 8px;
}

.est-method-formula {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.est-method-formula strong {
    color: var(--text-primary);
}

.est-method-close {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all var(--transition);
}

.est-method-close:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
}

/* ── Clickable time results ── */
.est-clickable {
    cursor: pointer;
    transition: opacity var(--transition);
    position: relative;
}

.est-clickable:hover {
    opacity: 0.75;
}

.est-clickable::after {
    content: 'ⓘ';
    font-size: 0.55rem;
    position: absolute;
    top: -2px;
    right: -10px;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity var(--transition);
}

.est-clickable:hover::after {
    opacity: 1;
}

@media (max-width: 768px) {
    .est-sport-row {
        flex-wrap: wrap;
        gap: 8px;
    }
    .est-sport-result {
        width: 100%;
        text-align: left;
        padding-left: 46px;
    }
    .est-comparison {
        flex-direction: column;
        gap: 8px;
    }
}