/**
 * SHARED FORM STYLES
 * Common form styling used across all apps
 * Eliminates CSS duplication and ensures consistent form appearance
 */

/* ==========================================================================
   FORM VALIDATION STATES
   ========================================================================== */

.form-input.form-error,
.form-textarea.form-error {
    border-color: var(--color-error) !important;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.1) !important;
    background-color: rgba(239, 68, 68, 0.02) !important;
}

.form-input.form-success,
.form-textarea.form-success {
    border-color: var(--color-success) !important;
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.1) !important;
}

.form-input.form-success::after {
    content: '✓';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-success);
    font-weight: bold;
    pointer-events: none;
}

/* ==========================================================================
   ERROR MESSAGES
   ========================================================================== */

.field-error-message {
    color: var(--color-error);
    font-size: var(--text-sm);
    margin-top: var(--space-1);
    display: block;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   FORM ENHANCEMENTS
   ========================================================================== */

.form-input.has-content,
.form-textarea.has-content {
    background-color: rgba(59, 130, 246, 0.02);
    border-color: var(--color-primary-300);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background-color: rgba(59, 130, 246, 0.02);
}

/* ==========================================================================
   RESPONSIVE FORM STYLES
   ========================================================================== */

@media (max-width: 768px) {
    .form-group {
        margin-bottom: var(--space-4);
    }
    
    .form-input,
    .form-textarea {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

/* ==========================================================================
   ACCESSIBILITY ENHANCEMENTS
   ========================================================================== */

.form-input:focus-visible,
.form-textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   BUTTON LOADING STATES
   ========================================================================== */

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.btn[disabled] {
    cursor: not-allowed !important;
    opacity: 0.6 !important;
    background-color: var(--color-neutral-400) !important;
    border-color: var(--color-neutral-400) !important;
    color: var(--color-neutral-600) !important;
    pointer-events: none;
}

.btn[disabled]:hover {
    transform: none !important;
    box-shadow: none !important;
    background-color: var(--color-neutral-400) !important;
    border-color: var(--color-neutral-400) !important;
}

/* ==========================================================================
   FORM ANIMATIONS
   ========================================================================== */

.form-group {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Staggered animation delays for form groups */
.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.2s; }
.form-group:nth-child(3) { animation-delay: 0.3s; }
.form-group:nth-child(4) { animation-delay: 0.4s; }
.form-group:nth-child(5) { animation-delay: 0.5s; }

/* ==========================================================================
   FORM FOCUS ENHANCEMENTS
   ========================================================================== */

.form-input:focus + .form-label,
.form-textarea:focus + .form-label {
    color: var(--color-primary);
    transform: scale(1.02);
    transition: all 0.2s ease;
}

/* Parent container scaling on focus */
.form-group:focus-within {
    transform: scale(1.01);
    transition: transform 0.2s ease;
}

/* ==========================================================================
   DARK MODE SUPPORT (if needed in future)
   ========================================================================== */

@media (prefers-color-scheme: dark) {
    .form-input.form-error,
    .form-textarea.form-error {
        background-color: rgba(239, 68, 68, 0.05);
    }
    
    .form-input.form-success,
    .form-textarea.form-success {
        background-color: rgba(34, 197, 94, 0.05);
    }
    
    .field-error-message {
        color: #ff6b6b;
    }
}

/* ==========================================================================
   CHECKBOX STYLES
   ========================================================================== */

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-2);
    flex-direction: row; /* Default to row layout */
}

.form-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-neutral-300);
    border-radius: 4px;
    background-color: white;
    cursor: pointer;
    flex-shrink: 0;
    margin-top: 2px; /* Align with first line of label text */
    transition: all 0.2s ease;
}

.form-checkbox:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='m13.854 3.646-6.647 6.646-3.354-3.353a.5.5 0 0 0-.708.708l3.5 3.5a.5.5 0 0 0 .708 0l7-7a.5.5 0 0 0-.708-.708z'/%3e%3c/svg%3e");
    background-size: 100% 100%;
    background-position: center;
    background-repeat: no-repeat;
}

.form-checkbox:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-checkbox:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.checkbox-label {
    cursor: pointer;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: 1.5;
    color: var(--color-neutral-900);
    user-select: none;
}

.checkbox-label a {
    color: var(--color-primary);
    text-decoration: underline;
    transition: color 0.2s ease;
}

.checkbox-label a:hover {
    color: var(--color-primary-dark);
}

.checkbox-label a:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Error state for checkbox */
.form-checkbox.form-error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.1);
}

.checkbox-group.form-error .checkbox-label {
    color: var(--color-error);
}

/* Error messages for checkbox groups */
.checkbox-group .field-error-message {
    width: 100%;
    margin-top: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background-color: rgba(239, 68, 68, 0.08);
    border-left: 3px solid var(--color-error);
    border-radius: 4px;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: 1.4;
    word-wrap: break-word;
    box-sizing: border-box;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Ensure checkbox group container handles error message properly */
.checkbox-group {
    flex-direction: column;
}

.checkbox-group:not(.form-error) {
    flex-direction: row;
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
    .checkbox-group {
        gap: var(--space-2);
    }
    
    .form-checkbox {
        width: 18px;
        height: 18px;
    }
    
    .checkbox-label {
        font-size: var(--text-xs);
    }
    
    /* Adjust error message styling for mobile */
    .checkbox-group .field-error-message {
        padding: var(--space-2);
        font-size: var(--text-xs);
        margin-top: var(--space-1);
    }
} 