/**
 * K-Sys 5.0 — Next-Gen Forms Design System
 * Modern Glassmorphism, Gradient Glow, Visual Cards, Stepper, Micro-Interactions
 */

:root {
    --ksys-form-primary: #4a6cf7;
    --ksys-form-primary-hover: #3b5bdb;
    --ksys-form-primary-glow: rgba(74, 108, 247, 0.25);
    --ksys-form-gradient: linear-gradient(135deg, #4a6cf7 0%, #845ef7 100%);
    --ksys-form-gradient-accent: linear-gradient(135deg, #06d6a0 0%, #118ab2 100%);
    --ksys-form-bg: #ffffff;
    --ksys-form-surface: #f8faff;
    --ksys-form-border: #e2e8f0;
    --ksys-form-border-focus: #4a6cf7;
    --ksys-form-text: #1e293b;
    --ksys-form-text-muted: #64748b;
    --ksys-form-radius-sm: 8px;
    --ksys-form-radius-md: 12px;
    --ksys-form-radius-lg: 20px;
    --ksys-form-radius-pill: 50px;
    --ksys-form-shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --ksys-form-shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
    --ksys-form-shadow-lg: 0 20px 50px rgba(74, 108, 247, 0.12);
    --ksys-form-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-bs-theme="dark"] .ksys-form,
.ksys-form[data-theme="dark"] {
    --ksys-form-bg: #1e293b;
    --ksys-form-surface: #0f172a;
    --ksys-form-border: #334155;
    --ksys-form-text: #f1f5f9;
    --ksys-form-text-muted: #94a3b8;
    --ksys-form-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --ksys-form-shadow-md: 0 10px 30px rgba(0, 0, 0, 0.45);
    --ksys-form-shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.6);
}

/* =========================================================================
   1. FORM CONTAINER & THEMES
   ========================================================================= */
.ksys-form-card {
    background: var(--ksys-form-bg);
    border: 1px solid var(--ksys-form-border);
    border-radius: var(--ksys-form-radius-lg);
    box-shadow: var(--ksys-form-shadow-md);
    padding: 32px 36px;
    position: relative;
    overflow: hidden;
    transition: var(--ksys-form-transition);
}

@media (max-width: 768px) {
    .ksys-form-card {
        padding: 24px 20px;
        border-radius: var(--ksys-form-radius-md);
    }
}

/* Theme: Modern Clean (Default) */
.ksys-form.theme-modern .ksys-form-card,
.ksys-form-card.theme-modern {
    background: var(--ksys-form-bg);
    border: 1px solid var(--ksys-form-border);
}

/* Theme: Glassmorphism */
.ksys-form.theme-glass .ksys-form-card,
.ksys-form-card.theme-glass {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 20px 60px rgba(31, 38, 135, 0.12);
}

[data-bs-theme="dark"] .ksys-form.theme-glass .ksys-form-card,
[data-bs-theme="dark"] .ksys-form-card.theme-glass {
    background: rgba(30, 41, 59, 0.7);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* Theme: Vibrant Gradient */
.ksys-form.theme-gradient .ksys-form-card,
.ksys-form-card.theme-gradient {
    border: none;
    position: relative;
    background: var(--ksys-form-bg);
    box-shadow: var(--ksys-form-shadow-lg);
}

.ksys-form.theme-gradient .ksys-form-card::before,
.ksys-form-card.theme-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--ksys-form-gradient);
}

/* Theme: Luxury Dark */
.ksys-form.theme-luxury .ksys-form-card,
.ksys-form-card.theme-luxury {
    background: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #f8fafc;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
}

.ksys-form.theme-luxury .ksys-form-header h3 {
    color: #ffffff;
    background: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Theme: Minimalist Luxe */
.ksys-form.theme-minimal .ksys-form-card,
.ksys-form-card.theme-minimal {
    box-shadow: none;
    border: 1px solid var(--ksys-form-border);
    border-radius: 8px;
    background: transparent;
}

/* Form Header */
.ksys-form-header {
    margin-bottom: 28px;
    position: relative;
}

.ksys-form-title {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--ksys-form-text);
    margin-bottom: 8px;
}

.ksys-form-desc {
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--ksys-form-text-muted);
    margin-bottom: 0;
}

/* =========================================================================
   2. INPUT GROUPS WITH CONTEXTUAL ICONS & FLOATING EFFECT
   ========================================================================= */
.ksys-field-wrap {
    position: relative;
    margin-bottom: 20px;
}

.ksys-field-label {
    display: block;
    font-size: 13.5px;
    font-weight: 700;
    color: var(--ksys-form-text);
    margin-bottom: 7px;
    transition: var(--ksys-form-transition);
}

.ksys-req-mark {
    color: #ef4444;
    font-weight: 700;
    margin-inline-start: 2px;
}

.ksys-input-group {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    border-radius: var(--ksys-form-radius-md);
    transition: var(--ksys-form-transition);
}

.ksys-input-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    inset-inline-start: 14px;
    color: var(--ksys-form-text-muted);
    font-size: 16px;
    pointer-events: none;
    z-index: 2;
    transition: var(--ksys-form-transition);
}

.ksys-input-group.is-textarea .ksys-input-icon {
    top: 18px;
    transform: none;
}

.ksys-control {
    width: 100%;
    padding: 11px 16px;
    padding-inline-start: 42px;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.5;
    color: var(--ksys-form-text);
    background-color: var(--ksys-form-surface);
    border: 1.5px solid var(--ksys-form-border);
    border-radius: var(--ksys-form-radius-md) !important;
    transition: var(--ksys-form-transition);
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.02);
}

.ksys-control:hover {
    border-color: #cbd5e1;
}

.ksys-control:focus {
    background-color: var(--ksys-form-bg);
    border-color: var(--ksys-form-primary);
    box-shadow: 0 0 0 4px var(--ksys-form-primary-glow);
    outline: none;
}

.ksys-input-group:focus-within .ksys-input-icon {
    color: var(--ksys-form-primary);
    transform: translateY(-50%) scale(1.1);
}

.ksys-input-group.is-textarea:focus-within .ksys-input-icon {
    transform: scale(1.1);
}

textarea.ksys-control {
    min-height: 110px;
    resize: vertical;
}

select.ksys-control {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%2364748b' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 12px 10px;
    padding-inline-end: 38px;
    cursor: pointer;
}

[dir="rtl"] select.ksys-control {
    background-position: left 14px center;
}

.ksys-field-help {
    font-size: 12px;
    color: var(--ksys-form-text-muted);
    margin-top: 5px;
}

/* =========================================================================
   3. VISUAL CHOICE CARDS (RADIO & CHECKBOX)
   ========================================================================= */
.ksys-choice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    margin-top: 6px;
}

@media (max-width: 576px) {
    .ksys-choice-grid {
        grid-template-columns: 1fr;
    }
}

.ksys-choice-card {
    position: relative;
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: var(--ksys-form-surface);
    border: 1.5px solid var(--ksys-form-border);
    border-radius: var(--ksys-form-radius-md);
    cursor: pointer;
    transition: var(--ksys-form-transition);
    user-select: none;
    margin-bottom: 0;
}

.ksys-choice-card:hover {
    border-color: #cbd5e1;
    background: #f1f5f9;
    transform: translateY(-2px);
    box-shadow: var(--ksys-form-shadow-sm);
}

.ksys-choice-card input[type="radio"],
.ksys-choice-card input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.ksys-choice-content {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.ksys-choice-indicator {
    width: 20px;
    height: 20px;
    border-radius: 6px;
    border: 2px solid #94a3b8;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--ksys-form-transition);
    font-size: 12px;
    color: transparent;
}

.ksys-choice-card input[type="radio"] + .ksys-choice-content .ksys-choice-indicator {
    border-radius: 50%;
}

.ksys-choice-card input:checked + .ksys-choice-content .ksys-choice-indicator {
    background: var(--ksys-form-primary);
    border-color: var(--ksys-form-primary);
    color: #ffffff;
    transform: scale(1.05);
}

.ksys-choice-card:has(input:checked) {
    border-color: var(--ksys-form-primary);
    background: rgba(74, 108, 247, 0.06);
    box-shadow: 0 4px 14px rgba(74, 108, 247, 0.12);
}

.ksys-choice-label {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--ksys-form-text);
}

/* =========================================================================
   4. DRAG & DROP FILE UPLOAD ZONE
   ========================================================================= */
.ksys-upload-zone {
    border: 2px dashed #cbd5e1;
    border-radius: var(--ksys-form-radius-md);
    background: var(--ksys-form-surface);
    padding: 24px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--ksys-form-transition);
    position: relative;
    overflow: hidden;
}

.ksys-upload-zone:hover,
.ksys-upload-zone.dragover {
    border-color: var(--ksys-form-primary);
    background: rgba(74, 108, 247, 0.04);
    transform: translateY(-2px);
}

.ksys-upload-icon {
    font-size: 36px;
    color: var(--ksys-form-primary);
    margin-bottom: 8px;
    transition: var(--ksys-form-transition);
}

.ksys-upload-zone:hover .ksys-upload-icon {
    transform: scale(1.15) translateY(-3px);
}

.ksys-upload-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--ksys-form-text);
    margin-bottom: 4px;
}

.ksys-upload-hint {
    font-size: 12px;
    color: var(--ksys-form-text-muted);
}

.ksys-upload-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: var(--ksys-form-radius-pill);
    box-shadow: var(--ksys-form-shadow-sm);
    margin-top: 10px;
    font-size: 13px;
    font-weight: 600;
}

/* =========================================================================
   5. STAR RATING & RANGE SLIDER
   ========================================================================= */
.ksys-star-rating {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 0;
}

.ksys-stars-wrap {
    display: inline-flex;
    gap: 6px;
}

.ksys-star-btn {
    background: none;
    border: none;
    padding: 4px;
    font-size: 26px;
    color: #cbd5e1;
    cursor: pointer;
    transition: var(--ksys-form-transition);
    line-height: 1;
}

.ksys-star-btn:hover,
.ksys-star-btn.hover,
.ksys-star-btn.active {
    color: #f59f00;
    transform: scale(1.18);
    filter: drop-shadow(0 2px 8px rgba(245, 159, 0, 0.4));
}

.ksys-rating-badge {
    font-size: 12px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: var(--ksys-form-radius-pill);
}

/* Range Slider */
.ksys-range-wrap {
    padding: 6px 0;
}

.ksys-range {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: #e2e8f0;
    outline: none;
    accent-color: var(--ksys-form-primary);
    cursor: pointer;
}

/* =========================================================================
   6. MULTI-STEP PROGRESS STEPPER WIZARD
   ========================================================================= */
.ksys-stepper-header {
    margin-bottom: 32px;
    position: relative;
}

.ksys-stepper-track {
    position: absolute;
    top: 20px;
    left: 40px;
    right: 40px;
    height: 3px;
    background: #e2e8f0;
    z-index: 1;
}

[dir="rtl"] .ksys-stepper-track {
    left: 40px;
    right: 40px;
}

.ksys-stepper-bar {
    height: 100%;
    background: var(--ksys-form-gradient);
    transition: width 0.4s ease;
    border-radius: 3px;
}

.ksys-stepper-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    z-index: 2;
}

.ksys-step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    text-align: center;
}

.ksys-step-circle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--ksys-form-bg);
    border: 2px solid #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: var(--ksys-form-text-muted);
    transition: var(--ksys-form-transition);
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.05);
}

.ksys-step-item.active .ksys-step-circle {
    background: var(--ksys-form-primary);
    border-color: var(--ksys-form-primary);
    color: #ffffff;
    box-shadow: 0 0 0 6px var(--ksys-form-primary-glow);
    transform: scale(1.08);
}

.ksys-step-item.completed .ksys-step-circle {
    background: #06d6a0;
    border-color: #06d6a0;
    color: #ffffff;
}

.ksys-step-label {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--ksys-form-text-muted);
    margin-top: 8px;
    transition: var(--ksys-form-transition);
    max-width: 110px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ksys-step-item.active .ksys-step-label {
    color: var(--ksys-form-primary);
}

.ksys-step-item.completed .ksys-step-label {
    color: var(--ksys-form-text);
}

.ksys-step-content {
    animation: ksysFadeSlide 0.35s ease;
}

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

/* =========================================================================
   7. SUBMIT BUTTON & MICRO-ANIMATIONS
   ========================================================================= */
.ksys-submit-btn {
    background: var(--ksys-form-gradient);
    border: none;
    color: #ffffff;
    font-size: 15px;
    font-weight: 700;
    padding: 13px 32px;
    border-radius: var(--ksys-form-radius-pill);
    box-shadow: 0 8px 24px rgba(74, 108, 247, 0.3);
    cursor: pointer;
    transition: var(--ksys-form-transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
}

.ksys-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(74, 108, 247, 0.4);
    color: #ffffff;
}

.ksys-submit-btn:active {
    transform: translateY(1px);
}

.ksys-submit-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(60deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transform: rotate(30deg);
    transition: 0.7s;
    opacity: 0;
}

.ksys-submit-btn:hover::after {
    left: 100%;
    opacity: 1;
}

/* =========================================================================
   8. SUCCESS CELEBRATION CARD
   ========================================================================= */
.ksys-success-card {
    text-align: center;
    padding: 48px 24px;
    animation: ksysPopIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes ksysPopIn {
    0% { transform: scale(0.85); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.ksys-success-icon-wrap {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(6, 214, 160, 0.15) 0%, rgba(6, 214, 160, 0.3) 100%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: #06d6a0;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(6, 214, 160, 0.25);
    animation: ksysPulse 2s infinite;
}

@keyframes ksysPulse {
    0% { box-shadow: 0 0 0 0 rgba(6, 214, 160, 0.4); }
    70% { box-shadow: 0 0 0 16px rgba(6, 214, 160, 0); }
    100% { box-shadow: 0 0 0 0 rgba(6, 214, 160, 0); }
}

.ksys-success-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--ksys-form-text);
    margin-bottom: 8px;
}

.ksys-success-message {
    font-size: 14.5px;
    color: var(--ksys-form-text-muted);
    max-width: 460px;
    margin: 0 auto 24px;
    line-height: 1.6;
}

/* =========================================================================
   9. STATIC IMAGE & BANNER DISPLAY
   ========================================================================= */
.ksys-image-display-wrap {
    width: 100%;
    margin: 8px 0 16px;
    position: relative;
}

.ksys-image-display-wrap img {
    border-radius: var(--ksys-form-radius-card, 14px);
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.ksys-image-display-wrap a:hover img {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.14);
}

.ksys-image-display-caption {
    font-size: 13px;
    color: var(--ksys-form-text-muted, #64748b);
    font-weight: 500;
}
/* =========================================================================
   10. CONDITIONAL LOGIC VISIBILITY
   ========================================================================= */
.ksys-cond-hidden {
    display: none !important;
}
.ksys-field-wrap {
    transition: opacity 0.25s ease, transform 0.25s ease;
}