/* ============================================
   BMI CALCULATOR - TOOL SPECIFIC STYLES
   WebKaar Tools | style.css
   ============================================ */

/* ── CONTAINER ── */
.tool-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ── TOGGLE SWITCH ── */
.toggle-container {
    display: flex;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 4px;
    margin-bottom: 10px;
}

.toggle-btn {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 40px;
    background: transparent;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.toggle-btn.active {
    background-color: var(--primary-blue);
    color: white;
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}

/* ── INPUT CARD ── */
.input-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group-row {
    display: flex;
    gap: 16px;
}

.input-group-row .input-group {
    flex: 1;
}

/* ── LABELS ── */
label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ── OPTIONAL TAG ── */
.optional-tag {
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-muted);
    background-color: var(--bg-body);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 1px 8px;
}

/* ── INPUT FIELDS ── */
input {
    width: 100%;
    height: 50px;
    padding: 0 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-body);
    color: var(--text-main);
    font-size: 1.1rem;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

input:focus {
    border-color: var(--primary-blue);
}

input.input-error {
    border-color: #ef4444;
}

/* ── SELECT DROPDOWN ── */
.select-input {
    width: 100%;
    height: 50px;
    padding: 0 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-body);
    color: var(--text-main);
    font-size: 1rem;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s;
    box-sizing: border-box;
    -webkit-appearance: none;
    appearance: none;
}

.select-input:focus {
    border-color: var(--primary-blue);
}

/* ── INPUT HINT TEXT ── */
.input-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* ── PRIMARY BUTTON ── */
.primary-btn {
    background-color: var(--primary-blue);
    color: white;
    padding: 16px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1.1rem;
    border: none;
    cursor: pointer;
    width: 100%;
    transition: transform 0.1s, opacity 0.2s;
}

.primary-btn:active {
    transform: scale(0.98);
}

/* ── SECONDARY BUTTON ── */
.secondary-btn {
    background-color: transparent;
    color: var(--primary-blue);
    padding: 12px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    border: 2px solid var(--primary-blue);
    cursor: pointer;
    width: 100%;
    transition: transform 0.1s, background-color 0.2s;
}

.secondary-btn:active {
    transform: scale(0.98);
    background-color: rgba(37, 99, 235, 0.07);
}

/* ── RESULT CARD ── */
.result-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px;
    box-shadow: var(--shadow-md);
    text-align: center;
    animation: slideUp 0.3s ease;
}

.result-card h3 {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 10px;
}

.bmi-value {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1;
    margin-bottom: 8px;
    transition: color 0.3s;
}

.bmi-status {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 24px;
}

.bmi-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 20px;
    margin-bottom: 0;
    line-height: 1.5;
}

/* ── BMI VISUAL METER ── */
.bmi-meter {
    margin-top: 10px;
    position: relative;
}

.meter-bar {
    height: 12px;
    border-radius: 10px;
    background: linear-gradient(to right,
        #3b82f6 0%,
        #3b82f6 18.5%,
        #10b981 18.5%,
        #10b981 50%,
        #f59e0b 50%,
        #f59e0b 75%,
        #ef4444 75%,
        #ef4444 100%
    );
    width: 100%;
    position: relative;
    overflow: visible;
}

.meter-fill {
    position: absolute;
    top: -4px;
    width: 4px;
    height: 20px;
    background-color: var(--text-main);
    border: 2px solid white;
    border-radius: 2px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.35);
    left: 0%;
    transition: left 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.meter-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 8px;
}

/* ── EXTRA RESULT CARD ── */
.result-extra-card {
    margin-top: 20px;
    background-color: var(--bg-body);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    text-align: left;
}

.result-extra-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.result-extra-row:last-child {
    border-bottom: none;
}

.result-extra-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
    flex-shrink: 0;
}

.result-extra-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
    text-align: right;
}

.tip-text {
    font-weight: 500;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: right;
    line-height: 1.4;
}

/* ── SHARE BANNER ── */
.share-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-top: 20px;
    padding: 14px 16px;
    background-color: var(--bg-body);
    border: 1.5px solid var(--primary-blue);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    box-sizing: border-box;
    text-align: left;
}

.share-banner:active {
    transform: scale(0.98);
    background-color: rgba(37, 99, 235, 0.07);
}

.share-banner-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.share-banner-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background-color: rgba(37, 99, 235, 0.12);
    border-radius: 10px;
    color: var(--primary-blue);
    flex-shrink: 0;
}

.share-banner-text-wrap {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.share-banner-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary-blue);
    line-height: 1.2;
}

.share-banner-sub {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.2;
}

.share-banner-arrow {
    color: var(--primary-blue);
    flex-shrink: 0;
    opacity: 0.7;
}

/* ── TOAST NOTIFICATION ── */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background-color: #1e293b;
    color: #f1f5f9;
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 9999;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ── MODAL ── */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.modal-overlay.hidden { display: none; }

.modal-content {
    background: var(--bg-surface);
    width: 90%;
    max-width: 400px;
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    max-height: 80vh;
    overflow-y: auto;
}

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

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
}

.modal-body p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 4px;
}

/* ── ICON BUTTON ── */
.icon-button {
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
    color: var(--text-muted);
}

/* ── UTILITY ── */
.hidden {
    display: none !important;
}

/* ── ANIMATIONS ── */
@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}