/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Colors - Elegant Light Theme */
    --bg-primary: #fafbfc;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-card-hover: rgba(255, 255, 255, 1);

    /* Soft Pastel Accents */
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-rose: #f43f5e;
    --accent-amber: #f59e0b;
    --accent-emerald: #10b981;
    --accent-sky: #0ea5e9;

    /* Category Colors - Subtle */
    --category-contact: #0ea5e9;
    --category-complain: #f43f5e;
    --category-suggest: #f59e0b;
    --category-feedback: #10b981;

    /* Text Colors */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;

    /* Borders & Shadows */
    --border-light: #e5e7eb;
    --border-medium: #d1d5db;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Spacing - Reduced */
    --spacing-xs: 0.375rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #f0f4f8 0%, #e8eef5 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ===================================
   Animated Particle Background
   =================================== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.4;
}

/* ===================================
   Container
   =================================== */
.container {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    min-height: 100vh;
}

/* ===================================
   Header
   =================================== */
.header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    animation: fadeInDown 0.6s ease-out;
}

.title {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.03em;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* ===================================
   Mode Toggle
   =================================== */
.mode-toggle-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    animation: fadeIn 0.6s ease-out 0.15s backwards;
}

.mode-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
}

.mode-switch-input {
    display: none;
}

.mode-switch-label {
    position: relative;
    width: 64px;
    height: 32px;
    background: var(--bg-primary);
    border-radius: 16px;
    cursor: pointer;
    transition: var(--transition-normal);
    border: 1px solid var(--border-medium);
}

.mode-switch-switch {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--accent-sky), var(--accent-primary));
    border-radius: 50%;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.mode-switch-input:checked+.mode-switch-label .mode-switch-switch {
    transform: translateX(32px);
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-rose));
}

.mode-labels {
    display: flex;
    gap: var(--spacing-md);
}

.mode-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-tertiary);
    transition: var(--transition-fast);
    cursor: pointer;
}

.mode-label.active {
    color: var(--text-primary);
}

.mode-label svg {
    transition: var(--transition-fast);
    width: 16px;
    height: 16px;
}

/* ===================================
   Category Section
   =================================== */
.category-section {
    margin-bottom: var(--spacing-lg);
    animation: fadeIn 0.6s ease-out 0.3s backwards;
}

.section-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-align: center;
    color: var(--text-primary);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-sm);
}

.category-card {
    background: var(--bg-secondary);
    border: 1.5px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-xs);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.category-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-medium);
}

.category-card.selected {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.category-card[data-category="contact"].selected {
    border-color: var(--category-contact);
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.05), rgba(255, 255, 255, 1));
}

.category-card[data-category="complain"].selected {
    border-color: var(--category-complain);
    background: linear-gradient(135deg, rgba(244, 63, 94, 0.05), rgba(255, 255, 255, 1));
}

.category-card[data-category="suggest"].selected {
    border-color: var(--category-suggest);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.05), rgba(255, 255, 255, 1));
}

.category-card[data-category="feedback"].selected {
    border-color: var(--category-feedback);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(255, 255, 255, 1));
}

.category-icon {
    width: 44px;
    height: 44px;
    margin: 0 auto var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-primary);
    transition: var(--transition-normal);
}

.category-card[data-category="contact"] .category-icon {
    color: var(--category-contact);
}

.category-card[data-category="complain"] .category-icon {
    color: var(--category-complain);
}

.category-card[data-category="suggest"] .category-icon {
    color: var(--category-suggest);
}

.category-card[data-category="feedback"] .category-icon {
    color: var(--category-feedback);
}

.category-icon svg {
    width: 22px;
    height: 22px;
}

.category-card:hover .category-icon {
    transform: scale(1.05);
}

.category-card.selected .category-icon {
    background: currentColor;
    color: white;
}

.category-title {
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 2px;
    color: var(--text-primary);
}

.category-description {
    font-size: 0.6875rem;
    color: var(--text-tertiary);
    line-height: 1.3;
}

/* ===================================
   Contact Form
   =================================== */
.contact-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    animation: fadeIn 0.6s ease-out 0.45s backwards;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-group {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.form-input {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-family: inherit;
    transition: all var(--transition-normal);
    outline: none;
}

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

.form-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-input:focus+.form-label {
    transform: translateY(-2.2rem) scale(0.85);
    color: var(--accent-primary);
}

.form-input:not(:placeholder-shown)+.form-label {
    transform: translateY(-2.2rem) scale(0.85);
}

.form-label {
    position: absolute;
    left: 0.75rem;
    top: 0.75rem;
    color: var(--text-tertiary);
    font-size: 0.875rem;
    pointer-events: none;
    transition: all var(--transition-normal);
    transform-origin: left;
}

.form-border {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: var(--transition-normal);
}

.form-input:focus~.form-border {
    width: 100%;
}

.form-error {
    display: block;
    color: var(--accent-rose);
    font-size: 0.6875rem;
    margin-top: var(--spacing-xs);
}

.character-counter {
    text-align: right;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

.character-counter.warning {
    color: var(--accent-amber);
}

.character-counter.danger {
    color: var(--accent-rose);
}

/* ===================================
   Submit Button
   =================================== */
.submit-btn {
    width: 100%;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.submit-btn:hover::before {
    width: 300px;
    height: 300px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-text,
.btn-loader {
    position: relative;
    z-index: 1;
}

.spinner {
    animation: spin 1s linear infinite;
}

.spinner-circle {
    stroke: currentColor;
    stroke-linecap: round;
    stroke-dasharray: 60;
    stroke-dashoffset: 0;
    animation: spinnerDash 1.5s ease-in-out infinite;
}

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

@keyframes spinnerDash {
    0% {
        stroke-dashoffset: 60;
    }

    50% {
        stroke-dashoffset: 15;
    }

    100% {
        stroke-dashoffset: 60;
    }
}

/* ===================================
   Toast Notification
   =================================== */
.toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: bottom var(--transition-normal);
    min-width: 280px;
}

.toast.show {
    bottom: var(--spacing-md);
}

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast-message {
    font-size: 0.8125rem;
    color: var(--text-primary);
}

/* ===================================
   Success Modal
   =================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal.show {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    max-width: 360px;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-xl);
}

.modal.show .modal-content {
    transform: scale(1);
}

.success-animation {
    margin-bottom: var(--spacing-sm);
}

.checkmark {
    width: 64px;
    height: 64px;
    margin: 0 auto;
}

.checkmark-circle {
    stroke: var(--accent-emerald);
    stroke-width: 2;
    stroke-dasharray: 166;
    stroke-dashoffset: 166;
    animation: checkmarkCircle 0.6s ease-in-out forwards;
}

.checkmark-check {
    stroke: var(--accent-emerald);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    animation: checkmarkCheck 0.3s ease-in-out 0.6s forwards;
}

@keyframes checkmarkCircle {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes checkmarkCheck {
    to {
        stroke-dashoffset: 0;
    }
}

.modal-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--accent-emerald), var(--accent-sky));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
}

.modal-btn {
    padding: 0.625rem 1.5rem;
    background: linear-gradient(135deg, var(--accent-emerald), var(--accent-sky));
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===================================
   Confetti Canvas
   =================================== */
#confettiCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1500;
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

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

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .title {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .category-card {
        padding: var(--spacing-sm);
    }

    .category-icon {
        width: 48px;
        height: 48px;
    }

    .category-icon svg {
        width: 24px;
        height: 24px;
    }

    .category-title {
        font-size: 0.875rem;
    }

    .category-description {
        font-size: 0.625rem;
    }

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

    .contact-form {
        padding: var(--spacing-md);
    }

    .toast {
        min-width: calc(100% - 2rem);
        left: 1rem;
        transform: none;
    }

    .toast.show {
        bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .category-grid {
        grid-template-columns: 1fr;
    }

    .mode-labels {
        gap: var(--spacing-md);
    }

    .mode-label {
        font-size: 0.75rem;
    }
}