/* ============================================
   HABITAT CALCULATOR - COMPONENT STYLES
   Buttons, Cards, Forms, Calculator UI
   ============================================ */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm, 8px) var(--space-lg, 24px);
    font-size: var(--font-size-md, 16px);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md, 8px);
    cursor: pointer;
    transition: all var(--transition-fast, 0.15s ease-in-out);
    min-height: 48px;
    min-width: 48px;
    text-decoration: none;
    gap: var(--space-sm, 8px);
}

.btn-primary {
    background: var(--primary, #8ecae6);
    color: #FFFFFF;
}

.btn-primary:hover {
    background: var(--primary-dark, #5a9fb5);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md, 0 4px 6px rgba(0, 0, 0, 0.07));
}

.btn-secondary {
    background: var(--secondary, #7bc8a4);
    color: #FFFFFF;
}

.btn-secondary:hover {
    background: var(--secondary-dark, #5a9f7d);
}

.btn-accent {
    background: var(--info, #ffd93d);
    color: #FFFFFF;
}

.btn-accent:hover {
    background: var(--warning, #ffb700);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary, #8ecae6);
    color: var(--primary-dark, #5a9fb5);
}

.btn-outline:hover {
    background: var(--primary-light, #e0f4f8);
}

.btn-lg {
    padding: var(--space-md, 16px) var(--space-xl, 32px);
    font-size: var(--font-size-lg, 18px);
    min-height: 56px;
    border-radius: var(--radius-lg, 12px);
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Cards */
.card {
    background: var(--bg-secondary, #ffffff);
    border-radius: var(--radius-lg, 12px);
    box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
    padding: var(--space-lg, 24px);
    margin-bottom: var(--space-md, 16px);
    border: 1px solid var(--border-color, #e8e8e8);
    transition: box-shadow var(--transition-fast, 0.15s ease-in-out);
}

.card:hover {
    box-shadow: var(--shadow-md, 0 4px 6px rgba(0, 0, 0, 0.07));
}

.card-header {
    margin-bottom: var(--space-md, 16px);
    padding-bottom: var(--space-md, 16px);
    border-bottom: 1px solid var(--border-color, #e8e8e8);
}

.card-title {
    font-size: var(--font-size-lg, 18px);
    font-weight: 600;
    color: var(--text-primary, #2c3e50);
    margin: 0;
}

.card-subtitle {
    font-size: var(--font-size-sm, 14px);
    color: var(--text-muted, #8b9dc3);
    margin-top: var(--space-xs, 4px);
}

.card-body {
    padding: 0;
}

.card-body p {
    color: var(--text-secondary, #5a6c7d);
    line-height: 1.6;
}

/* Forms */
.form-group {
    margin-bottom: var(--space-md, 16px);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm, 14px);
    font-weight: 500;
    color: var(--text-secondary, #5a6c7d);
    margin-bottom: var(--space-xs, 4px);
}

.form-control {
    width: 100%;
    padding: var(--space-sm, 8px) var(--space-md, 16px);
    font-size: var(--font-size-md, 16px);
    border: 2px solid var(--border-color, #e8e8e8);
    border-radius: var(--radius-md, 8px);
    background: var(--bg-secondary, #ffffff);
    color: var(--text-primary, #2c3e50);
    transition: border-color var(--transition-fast, 0.15s ease-in-out);
    min-height: 48px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary, #8ecae6);
}

.form-control::placeholder {
    color: var(--text-muted, #8b9dc3);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235A6C7D' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md, 16px) center;
    background-size: 12px;
    padding-right: 36px;
}

/* Text Utilities */
.text-center {
    text-align: center;
}

.text-primary {
    color: var(--text-primary, #2c3e50);
}

.text-secondary {
    color: var(--text-secondary, #5a6c7d);
}

.text-muted {
    color: var(--text-muted, #8b9dc3);
}

.text-danger {
    color: var(--danger, #ff8b94);
}

.text-success {
    color: var(--success, #7bc8a4);
}

.text-warning {
    color: var(--warning, #ffd93d);
}

.text-info {
    color: var(--info, #8ecae6);
}

/* Spacing Utilities */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-xs, 4px); }
.mb-2 { margin-bottom: var(--space-sm, 8px); }
.mb-3 { margin-bottom: var(--space-md, 16px); }
.mb-4 { margin-bottom: var(--space-lg, 24px); }
.mb-5 { margin-bottom: var(--space-xl, 32px); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-xs, 4px); }
.mt-2 { margin-top: var(--space-sm, 8px); }
.mt-3 { margin-top: var(--space-md, 16px); }
.mt-4 { margin-top: var(--space-lg, 24px); }
.mt-5 { margin-top: var(--space-xl, 32px); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-xs, 4px); }
.p-2 { padding: var(--space-sm, 8px); }
.p-3 { padding: var(--space-md, 16px); }
.p-4 { padding: var(--space-lg, 24px); }
.p-5 { padding: var(--space-xl, 32px); }

/* Flexbox Utilities */
.d-flex {
    display: flex;
}

.justify-content-center {
    justify-content: center;
}

.justify-content-between {
    justify-content: space-between;
}

.align-items-center {
    align-items: center;
}

.flex-column {
    flex-direction: column;
}

.gap-1 { gap: var(--space-xs, 4px); }
.gap-2 { gap: var(--space-sm, 8px); }
.gap-3 { gap: var(--space-md, 16px); }

/* Grid Utilities */
.row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md, 16px);
}

/* A .row that actually uses Bootstrap columns (.col-md-6, .col-lg-8, …) must stay
   a native Bootstrap flex row. The custom .row→grid override above is only meant
   for the app's own auto-grid usage (rows whose children are NOT .col-*). When it
   hits a Bootstrap .row/.col it forces a fixed grid (3 columns at ≥769px) that
   compounds with the Bootstrap col widths and collapses columns to unreadable
   char-per-line widths (seen on Home and Building Profiles at tablet/desktop).
   This keeps those layouts mobile-first AND correct on desktop. Requires :has()
   (baseline in all current browsers). */
.row:has(> [class*="col-"]) {
    display: flex;
    flex-wrap: wrap;
    grid-template-columns: none;
    gap: 0; /* use Bootstrap's own gutters (g-*), not the grid gap */
}

.col-12 {
    grid-column: 1 / -1;
}

/* Alert Boxes */
.alert {
    padding: var(--space-md, 16px);
    border-radius: var(--radius-md, 8px);
    border-left: 4px solid;
    margin-bottom: var(--space-md, 16px);
}

.alert-success {
    background: #e8f5e9;
    color: #2e7d32;
    border-left-color: var(--success, #7bc8a4);
}

.alert-danger {
    background: #ffebee;
    color: #c62828;
    border-left-color: var(--danger, #ff8b94);
}

.alert-warning {
    background: #fff3e0;
    color: #e65100;
    border-left-color: var(--warning, #ffd93d);
}

.alert-info {
    background: #e3f2fd;
    color: #0d47a1;
    border-left-color: var(--info, #8ecae6);
}

/* Badge */
.badge {
    display: inline-block;
    padding: var(--space-xs, 4px) var(--space-sm, 8px);
    border-radius: var(--radius-full, 9999px);
    font-size: var(--font-size-xs, 12px);
    font-weight: 600;
}

.badge-primary {
    background: var(--primary-light, #e0f4f8);
    color: var(--primary-dark, #5a9fb5);
}

.badge-secondary {
    background: var(--pastel-green-light, #d4f1e4);
    color: var(--secondary-dark, #5a9f7d);
}

/* Responsive */
@media (max-width: 576px) {
    .btn-lg {
        padding: var(--space-sm, 8px) var(--space-md, 16px);
        min-height: 48px;
    }

    .card {
        padding: var(--space-md, 16px);
    }

    .row {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 577px) and (max-width: 768px) {
    .row {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 769px) {
    .row {
        grid-template-columns: repeat(3, 1fr);
    }
}