/* ===== CSS VARIABLES & DESIGN SYSTEM ===== */
:root {
    /* Colors - Black & Gold Palette */
    --primary-gradient: linear-gradient(135deg, #D4AF37 0%, #FFD700 100%);
    --secondary-gradient: linear-gradient(135deg, #B8860B 0%, #DAA520 100%);
    --success-gradient: linear-gradient(135deg, #D4AF37 0%, #FFD700 100%);
    --dark-bg: #000000;
    --card-bg: rgba(212, 175, 55, 0.05);
    --card-border: rgba(212, 175, 55, 0.2);
    --text-primary: #ffffff;
    --text-secondary: #D4AF37;
    --input-bg: rgba(26, 26, 26, 0.9);
    --input-border: rgba(212, 175, 55, 0.3);
    --input-focus: rgba(212, 175, 55, 0.5);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(103, 126, 234, 0.3);
}

/* ===== GLOBAL RESET ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--dark-bg);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 215, 0, 0.08) 0%, transparent 50%);
    background-attachment: fixed;
}

/* ===== APP CONTAINER ===== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 100vw;
    overflow-x: hidden;
}

/* ===== HEADER ===== */
.app-header {
    padding: var(--spacing-md) var(--spacing-sm);
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }

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

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-placeholder {
    background: var(--primary-gradient);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-glow);
    transition: transform var(--transition-base);
}

.logo-placeholder:hover {
    transform: scale(1.05);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: 2px;
    background: linear-gradient(135deg, #fff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-sm);
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
}

/* ===== SERVICE SELECTION ===== */
.service-selection {
    animation: fadeIn 0.5s ease;
}

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

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

.main-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xs);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

/* ===== CATEGORY TABS ===== */
.category-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    background: var(--card-bg);
    padding: var(--spacing-xs);
    border-radius: var(--radius-lg);
    border: 1px solid var(--card-border);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-sm);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
}

.tab-btn.active {
    background: var(--primary-gradient);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.tab-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.05);
}

/* ===== SERVICE CARDS ===== */
.service-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    animation: fadeIn 0.5s ease;
}

.service-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(212, 175, 55, 0.8);
}

.service-card:active {
    transform: translateY(-2px);
}

.service-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.service-icon {
    font-size: var(--font-size-xl);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.service-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    flex: 1;
}

.service-badge {
    background: var(--secondary-gradient);
    color: var(--text-primary);
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.service-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

/* ===== FORM SCREEN ===== */
.form-screen {
    animation: slideInRight 0.4s ease;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }

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

.form-screen.hidden {
    display: none;
}

.back-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-base);
    font-family: var(--font-family);
}

.back-btn:hover {
    background: var(--card-bg);
    border-color: rgba(212, 175, 55, 0.8);
    transform: translateX(-4px);
}

.form-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== DYNAMIC FORM ===== */
.dynamic-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    animation: fadeInUp 0.4s ease backwards;
}

.form-group:nth-child(1) {
    animation-delay: 0.05s;
}

.form-group:nth-child(2) {
    animation-delay: 0.1s;
}

.form-group:nth-child(3) {
    animation-delay: 0.15s;
}

.form-group:nth-child(4) {
    animation-delay: 0.2s;
}

.form-group:nth-child(5) {
    animation-delay: 0.25s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.form-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-label.required::after {
    content: ' *';
    color: #f5576c;
}

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

.form-input:focus,
.form-select:focus {
    border-color: #D4AF37;
    box-shadow: 0 0 0 3px var(--input-focus);
    background: rgba(26, 26, 26, 1);
}

.form-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23a8b3cf' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-sm) center;
    padding-right: calc(var(--spacing-sm) * 3);
}

/* ===== SUBMIT BUTTON ===== */
.submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #D4AF37 0%, #FFD700 100%);
    border: none;
    border-radius: var(--radius-lg);
    color: #000000;
    font-size: var(--font-size-base);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    font-family: var(--font-family);
    position: sticky;
    bottom: var(--spacing-sm);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(212, 175, 55, 0.6);
}

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

/* ===== FOOTER ===== */
.app-footer {
    padding: var(--spacing-md) var(--spacing-sm);
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-top: 2px solid var(--card-border);
    text-align: center;
}

.footer-notice {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    line-height: 1.5;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== UTILITY CLASSES ===== */
.hidden {
    display: none !important;
}

/* ===== RESPONSIVE ===== */
@media (min-width: 640px) {
    .service-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .main-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

@media (min-width: 768px) {
    :root {
        --font-size-2xl: 2.5rem;
        --font-size-xl: 1.75rem;
    }

    .app-header {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--card-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(212, 175, 55, 0.8);
}

/* ===== FORM LOGO ===== */
.form-logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.5);
    border-radius: var(--radius-lg);
    border: 2px solid var(--card-border);
}

.form-logo {
    max-width: 250px;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 4px 12px rgba(212, 175, 55, 0.3));
}