/* Golden One - Unified Form Design System */
/* A cohesive, professional, and modern UI for all form elements */

:root {
    /* Color Palette */
    --color-primary: #d4af37;
    --color-primary-light: #f4d03f;
    --color-primary-dark: #b8962e;
    --color-bg-dark: #0a0a0a;
    --color-bg-card: #141414;
    --color-bg-input: #1a1a1a;
    --color-border: #2a2a2a;
    --color-border-focus: #d4af37;
    --color-text: #ffffff;
    --color-text-muted: #888888;
    --color-text-placeholder: #555555;
    --color-success: #22c55e;
    --color-error: #ef4444;
    --color-warning: #f59e0b;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(212, 175, 55, 0.2);
    --shadow-glow-strong: 0 0 30px rgba(212, 175, 55, 0.4);
    
    /* Typography */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
}

/* ============================================
   BASE FORM ELEMENTS
   ============================================ */

.form-section {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.form-section-title {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.form-section-title i {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .form-grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    .form-grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   FORM GROUPS
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.form-label i {
    color: var(--color-primary);
    margin-right: var(--spacing-xs);
}

.form-label-required::after {
    content: '*';
    color: var(--color-error);
    margin-left: var(--spacing-xs);
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-error);
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ============================================
   INPUT FIELDS
   ============================================ */

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-normal);
    outline: none;
}

.form-input {
    height: 50px;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

.form-select {
    height: 50px;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23888888'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    background-size: 20px;
    padding-right: var(--spacing-2xl);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-placeholder);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    background: rgba(26, 26, 26, 0.95);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Input with Icon */
.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    transition: color var(--transition-normal);
    pointer-events: none;
    width: 20px;
    text-align: center;
}

.input-wrapper .form-input {
    padding-left: calc(var(--spacing-lg) + 28px);
}

.input-wrapper:focus-within .input-icon {
    color: var(--color-primary);
}

/* Input Validation States */
.form-input.is-invalid,
.form-textarea.is-invalid,
.form-select.is-invalid {
    border-color: var(--color-error);
}

.form-input.is-invalid:focus,
.form-textarea.is-invalid:focus,
.form-select.is-invalid:focus {
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.2);
}

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

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    outline: none;
    min-height: 50px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Primary Button */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: var(--color-bg-dark);
    border: 1px solid var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-strong);
}

/* Secondary Button */
.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-primary);
    color: var(--color-bg-dark);
}

/* Outline Button */
.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-outline:hover:not(:disabled) {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Danger Button */
.btn-danger {
    background: transparent;
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

.btn-danger:hover:not(:disabled) {
    background: var(--color-error);
    color: white;
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    border: none;
}

.btn-ghost:hover:not(:disabled) {
    color: var(--color-primary);
    background: rgba(212, 175, 55, 0.1);
}

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
    min-height: 60px;
}

/* Button with Loading */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.btn-primary.btn-loading::after {
    border-top-color: var(--color-bg-dark);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   CHECKBOX & RADIO
   ============================================ */

.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
}

.form-check-input {
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.form-check-label {
    font-size: var(--font-size-base);
    color: var(--color-text);
    cursor: pointer;
}

/* ============================================
   FORM ROW (Horizontal Layout)
   ============================================ */

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-row > .form-group {
    flex: 1;
    min-width: 200px;
    margin-bottom: 0;
}

/* ============================================
   ALERT MESSAGES
   ============================================ */

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.alert i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.3);
    color: var(--color-success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--color-error);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--color-warning);
}

.alert-info {
    background: rgba(212, 175, 55, 0.1);
    border-color: rgba(212, 175, 55, 0.3);
    color: var(--color-primary);
}

/* ============================================
   FLOATING LABELS
   ============================================ */

.floating-label {
    position: relative;
}

.floating-label .form-input,
.floating-label .form-textarea {
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
}

.floating-label label {
    position: absolute;
    left: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: var(--font-size-base);
    pointer-events: none;
    transition: all var(--transition-normal);
}

.floating-label .form-textarea + label {
    top: var(--spacing-lg);
    transform: translateY(0);
}

.floating-label .form-input:focus + label,
.floating-label .form-input:not(:placeholder-shown) + label,
.floating-label .form-textarea:focus + label,
.floating-label .form-textarea:not(:placeholder-shown) + label {
    top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-primary);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
    .form-section {
        padding: var(--spacing-lg);
    }
    
    .form-grid-2,
    .form-grid-3 {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .form-row > .form-group {
        min-width: 100%;
    }
    
    .btn {
        width: 100%;
    }
}

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

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

.form-group {
    animation: fadeIn 0.3s ease forwards;
}

.form-group:nth-child(2) { animation-delay: 0.1s; }
.form-group:nth-child(3) { animation-delay: 0.2s; }
.form-group:nth-child(4) { animation-delay: 0.3s; }
.form-group:nth-child(5) { animation-delay: 0.4s; }
.form-group:nth-child(6) { animation-delay: 0.5s; }

 /* ============================================
   BACKWARD COMPATIBILITY
   Legacy classes for existing code
   ============================================ */
 
 .input-field {
     width: 100%;
     padding: 0.75rem 1rem;
     border: 1px solid rgba(212, 175, 55, 0.3);
     border-radius: 0.5rem;
     background: rgba(20, 20, 20, 0.8);
     color: #fff;
     transition: all 0.3s ease;
 }
 
 .input-field:focus {
     outline: none;
     border-color: #d4af37;
     box-shadow: 0 0 15px rgba(212, 175, 55, 0.2);
 }
 
 .input-field::placeholder {
     color: #555;
 }
 
 .gold-btn {
     display: inline-flex;
     align-items: center;
     justify-content: center;
     gap: 0.5rem;
     padding: 0.75rem 1.5rem;
     background: linear-gradient(135deg, #f4d03f, #d4af37);
     color: #000;
     font-weight: 600;
     border: none;
     border-radius: 0.5rem;
     cursor: pointer;
     transition: all 0.3s ease;
 }
 
 .gold-btn:hover {
     transform: translateY(-2px);
     box-shadow: 0 10px 30px rgba(212, 175, 55, 0.3);
 }
 
 .gold-btn:disabled {
     opacity: 0.5;
     cursor: not-allowed;
     transform: none;
 }
 
 .glass-card {
     background: rgba(20, 20, 20, 0.8);
     border: 1px solid rgba(212, 175, 55, 0.2);
     border-radius: 1rem;
 }

 .space-y-6 > * + * {
     margin-top: 1.5rem;
 }

 .space-y-4 > * + * {
     margin-top: 1rem;
 }