/* ==============================================
   FORMS.CSS - Global Form Styling
   ==============================================
   Unified form styles for TheHUB.
   Covers: .form-group, .form-label, .form-input,
   .form-select, .form-textarea, .form-row,
   .form-actions, .form-section, .form-help

   To activate: add <link> in layout-header.php
   ============================================== */

/* ===== FORM GROUP (field wrapper) ===== */
.form-group {
    margin-bottom: var(--space-md);
}

/* ===== LABELS ===== */
.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-size: var(--text-sm, 0.875rem);
    font-weight: var(--weight-medium, 500);
    color: var(--color-text-primary);
}

.form-label-muted {
    display: block;
    margin-bottom: var(--space-xs);
    font-size: var(--text-sm, 0.875rem);
    font-weight: var(--weight-medium, 500);
    color: var(--color-text-secondary);
}

/* ===== INPUTS, SELECTS, TEXTAREAS ===== */
.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-base, 1rem);
    font-family: inherit;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
    -webkit-appearance: none;
    appearance: none;
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23868fa2' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: calc(var(--space-md) + 20px);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
    line-height: 1.5;
}

/* ===== FOCUS STATES ===== */
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

/* ===== PLACEHOLDER ===== */
.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

/* ===== DISABLED STATE ===== */
.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===== HELP TEXT ===== */
.form-help {
    font-size: var(--text-xs, 0.75rem);
    color: var(--color-text-muted);
    margin-top: var(--space-2xs);
}

/* ===== FORM ROW (multi-column) ===== */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.form-row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.form-full-width {
    grid-column: 1 / -1;
}

/* ===== FORM ACTIONS (button row) ===== */
.form-actions {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

/* ===== FORM SECTION (card-like wrapper) ===== */
.form-section {
    background: var(--color-bg-card);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.form-section-title {
    font-size: var(--text-xs, 0.75rem);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}

/* ===== INPUT WITH ICON ===== */
.form-input-icon {
    position: relative;
}

.form-input-icon .form-input {
    padding-left: calc(var(--space-md) + 24px);
}

.form-input-icon > i,
.form-input-icon > svg {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    width: 18px;
    height: 18px;
    pointer-events: none;
}

/* ===== CHECKBOX & RADIO ===== */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-accent);
    cursor: pointer;
}

/* ===== INLINE FORM ===== */
.form-inline {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.form-inline .form-group {
    margin-bottom: 0;
}

/* ===== VALIDATION STATES ===== */
.form-input.is-error,
.form-select.is-error,
.form-textarea.is-error {
    border-color: var(--color-error);
}

.form-input.is-error:focus,
.form-select.is-error:focus,
.form-textarea.is-error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-error {
    font-size: var(--text-xs, 0.75rem);
    color: var(--color-error);
    margin-top: var(--space-2xs);
}

.form-input.is-success,
.form-select.is-success {
    border-color: var(--color-success);
}

/* ===== MOBILE ===== */
@media (max-width: 767px) {
    .form-input,
    .form-select,
    .form-textarea {
        font-size: 16px; /* Prevents iOS zoom */
        min-height: 44px; /* Apple touch target */
    }

    .form-textarea {
        min-height: 88px;
    }

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

    .form-row-3 {
        grid-template-columns: 1fr;
    }

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

    .form-actions .btn {
        width: 100%;
    }
}