/* ===================================
   CSS CUSTOM PROPERTIES & RESET
   =================================== */
:root {
    /* Brand Gradient Colors */
    --gradient-purple: #793688;
    --gradient-pink: #EC2177;
    --gradient-deep-purple: #523D8E;
    
    /* Derived Colors */
    --primary-gradient: linear-gradient(135deg, var(--gradient-purple) 0%, var(--gradient-pink) 100%);
    --bg-gradient: linear-gradient(135deg, var(--gradient-deep-purple) 0%, var(--gradient-pink) 100%);
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #E5E5E5;
    --gray-300: #D4D4D4;
    --gray-400: #A3A3A3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    
    /* Semantic Colors */
    --error: #EF4444;
    --success: #10B981;
    --warning: #F59E0B;
    
    /* Typography */
    --font-primary: 'Lexend', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Space Mono', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-gradient: 0 10px 40px -10px rgba(121, 54, 136, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 400ms ease-in-out;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-50);
    overflow-x: hidden;
}

/* ===================================
   LAYOUT
   =================================== */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.main-content {
    flex: 1;
    padding: var(--spacing-3xl) 0;
}

/* ===================================
   HEADER
   =================================== */
.header {
    background: var(--bg-gradient);
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.header-content {
    position: relative;
    text-align: center;
    z-index: 1;
}

.header h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.brand-logo {
    height: 60px;
    width: auto;
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

.gradient-text {
    background: linear-gradient(135deg, var(--white) 0%, rgba(255, 255, 255, 0.9) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 300;
}

/* ===================================
   FORM WRAPPER
   =================================== */
.form-wrapper {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-2xl);
    max-width: 900px;
    margin: 0 auto;
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-header {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--gray-100);
}

.form-header h2 {
    font-size: 2rem;
    font-weight: 600;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.form-header p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* ===================================
   FORM SECTIONS
   =================================== */
.form-section {
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

/* ===================================
   FORM GROUPS
   =================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

label {
    display: block;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.required {
    color: var(--error);
    font-weight: 600;
}

/* ===================================
   FORM INPUTS
   =================================== */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--gray-800);
    background: var(--white);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    outline: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
select:focus,
textarea:focus {
    border-color: var(--gradient-pink);
    box-shadow: 0 0 0 3px rgba(236, 33, 119, 0.1);
}

input[type="text"]:hover,
input[type="email"]:hover,
input[type="tel"]:hover,
input[type="url"]:hover,
select:hover,
textarea:hover {
    border-color: var(--gray-400);
}

input.error,
select.error,
textarea.error {
    border-color: var(--error);
}

input.error:focus,
select.error:focus,
textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23525252' 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 0.75rem center;
    background-size: 1.25rem;
    padding-right: 2.5rem;
}

/* Character Counter */
.char-counter {
    text-align: right;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: var(--spacing-xs);
    font-family: var(--font-mono);
}

/* ===================================
   ERROR MESSAGES
   =================================== */
.error-message {
    display: block;
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    min-height: 20px;
    font-weight: 500;
}

/* ===================================
   FILE UPLOAD
   =================================== */
.file-upload-area {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    background: var(--gray-50);
}

.file-upload-area:hover {
    border-color: var(--gradient-pink);
    background: rgba(236, 33, 119, 0.02);
}

.file-upload-area.dragover {
    border-color: var(--gradient-pink);
    background: rgba(236, 33, 119, 0.05);
    transform: scale(1.01);
}

.upload-placeholder {
    pointer-events: none;
}

.upload-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    color: var(--gradient-pink);
    stroke-width: 2;
}

.upload-text {
    font-size: 1rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

.upload-text strong {
    color: var(--gradient-pink);
    font-weight: 600;
}

.upload-subtext {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* File Preview */
.file-preview {
    padding: var(--spacing-md);
}

.file-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.file-icon {
    width: 40px;
    height: 40px;
    color: var(--gradient-pink);
    flex-shrink: 0;
}

.file-details {
    flex: 1;
    text-align: left;
}

.file-name {
    font-weight: 500;
    color: var(--gray-800);
    margin-bottom: 0.25rem;
    word-break: break-word;
}

.file-size {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.remove-file {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.remove-file:hover {
    background: var(--error);
}

.remove-file svg {
    width: 18px;
    height: 18px;
    color: var(--gray-600);
    transition: color var(--transition-fast);
}

.remove-file:hover svg {
    color: var(--white);
}

/* Upload Progress */
.upload-progress {
    margin-top: var(--spacing-md);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.progress-fill {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 4px;
    transition: width var(--transition-base);
    width: 0%;
}

.progress-text {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-family: var(--font-mono);
}

/* ===================================
   CHECKBOXES
   =================================== */
.checkbox-group {
    margin-bottom: var(--spacing-md);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: 400;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-fast);
    margin-top: 2px;
}

.checkbox-label:hover .checkbox-custom {
    border-color: var(--gradient-pink);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--primary-gradient);
    border-color: transparent;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '';
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-text {
    color: var(--gray-700);
    font-size: 0.95rem;
    line-height: 1.5;
}

.checkbox-text a {
    color: var(--gradient-pink);
    text-decoration: none;
    font-weight: 500;
    transition: opacity var(--transition-fast);
}

.checkbox-text a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* ===================================
   BUTTONS
   =================================== */
.form-actions {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--gray-100);
}

.submit-btn {
    width: 100%;
    padding: 1rem 2rem;
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--white);
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-gradient);
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px -10px rgba(121, 54, 136, 0.4);
}

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

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-text,
.btn-loader {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

.spinner-circle {
    fill: none;
    stroke: var(--white);
    stroke-width: 3;
    stroke-dasharray: 50;
    stroke-dashoffset: 25;
    stroke-linecap: round;
}

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

.btn-secondary {
    padding: 0.75rem 1.5rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    color: var(--gradient-pink);
    background: var(--white);
    border: 2px solid var(--gradient-pink);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-top: var(--spacing-lg);
}

.btn-secondary:hover {
    background: var(--gradient-pink);
    color: var(--white);
}

/* ===================================
   SUCCESS MESSAGE
   =================================== */
.success-message {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    animation: fadeInUp 0.6s ease-out;
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: scaleIn 0.5s ease-out 0.2s both;
}

@keyframes scaleIn {
    from {
        transform: scale(0);
    }
    to {
        transform: scale(1);
    }
}

.success-icon svg {
    width: 48px;
    height: 48px;
    color: var(--white);
    stroke-width: 3;
}

.success-message h3 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
}

.success-message p {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 500px;
    margin: 0 auto;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer p {
    font-size: 0.875rem;
}

/* ===================================
   HONEYPOT (ANTI-BOT)
   =================================== */
.honeypot {
    position: absolute !important;
    left: -9999px !important;
    width: 1px !important;
    height: 1px !important;
    opacity: 0 !important;
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 768px) {
    .form-wrapper {
        padding: var(--spacing-lg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .header {
        padding: var(--spacing-xl) 0;
    }
    
    .main-content {
        padding: var(--spacing-xl) 0;
    }
    
    .section-title {
        font-size: 1.25rem;
    }
}

/* ===================================
   PRINT STYLES
   =================================== */
@media print {
    .header,
    .footer {
        display: none;
    }
    
    .form-wrapper {
        box-shadow: none;
    }
}