/* ========================================
   공공친구 회원가입 페이지 - 화이트톤 디자인 시스템
   Font Awesome Icons / 광주광역시 전용
   ======================================== */

/* ----------------------------------------
   CSS Variables
   ---------------------------------------- */
:root {
    /* Primary Colors - Teal */
    --primary-light: #A8D5DB;
    --primary-main: #3C8D99;
    --primary-dark: #2D6B73;
    
    /* Secondary Colors - Mint */
    --secondary-light: #B8E8D8;
    --secondary-main: #6FCCB4;
    --secondary-dark: #4BA88F;
    
    /* Accent Colors - Orange */
    --accent-light: #FFD9A8;
    --accent-main: #FFB347;
    --accent-dark: #E69A2E;
    
    /* Gray Scale */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Semantic Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;
    
    /* Background */
    --bg-page: #F8FAFC;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F9FAFB;
    --bg-input: #F9FAFB;
    
    /* Text */
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --text-light: #FFFFFF;
    
    /* Border */
    --border-color: #E5E7EB;
    --border-focus: var(--primary-main);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(60, 141, 153, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Typography */
    --font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 15px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    
    --letter-spacing: -0.02em;
}

/* ----------------------------------------
   Reset & Base
   ---------------------------------------- */
*, *::before, *::after {
    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);
    font-size: var(--font-size-base);
    line-height: 1.6;
    letter-spacing: var(--letter-spacing);
    color: var(--text-primary);
    background-color: var(--bg-page);
    min-height: 100vh;
}

/* ----------------------------------------
   Background
   ---------------------------------------- */
.page-background {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #F8FAFC 0%, #EEF4F6 50%, #F8FAFC 100%);
    z-index: -2;
}

.grid-pattern {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(60, 141, 153, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(60, 141, 153, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
}

/* ----------------------------------------
   Container
   ---------------------------------------- */
.signup-container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-md);
    padding-bottom: var(--spacing-2xl);
}

/* ----------------------------------------
   Header
   ---------------------------------------- */
.signup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-lg);
    position: sticky;
    top: 0;
    background: rgba(248, 250, 252, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
    margin-left: calc(-1 * var(--spacing-md));
    margin-right: calc(-1 * var(--spacing-md));
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.back-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 16px;
    box-shadow: var(--shadow-sm);
}

.back-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary-main);
    color: var(--primary-main);
}

.header-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.header-spacer {
    width: 40px;
}

/* ----------------------------------------
   Progress Steps
   ---------------------------------------- */
.progress-container {
    margin-bottom: var(--spacing-xl);
}

.progress-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.step-circle {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 18px;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.progress-step.active .step-circle,
.progress-step.completed .step-circle {
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    border-color: var(--primary-main);
    color: white;
    box-shadow: var(--shadow-glow);
}

.step-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 500;
    transition: color var(--transition-base);
}

.progress-step.active .step-label,
.progress-step.completed .step-label {
    color: var(--primary-main);
    font-weight: 600;
}

.progress-line {
    width: 80px;
    height: 2px;
    background: var(--border-color);
    margin-bottom: 28px;
    position: relative;
    overflow: hidden;
}

.progress-line-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary-main), var(--secondary-main));
    transition: width var(--transition-slow);
}

/* ----------------------------------------
   Social Info Banner
   ---------------------------------------- */
.social-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(60, 141, 153, 0.08);
    border: 1px solid rgba(60, 141, 153, 0.2);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 18px;
}

.social-icon.kakao { background: #FEE500; color: #000; }
.social-icon.google { background: #fff; color: #4285F4; border: 1px solid var(--border-color); }
.social-icon.naver { background: #03C75A; color: #fff; }
.social-icon.apple { background: #000; color: #fff; }

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

.social-text strong {
    color: var(--primary-main);
}

.social-email {
    display: block;
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    margin-top: 2px;
}

/* ----------------------------------------
   Form Card
   ---------------------------------------- */
.form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.form-card:hover {
    border-color: rgba(60, 141, 153, 0.3);
    box-shadow: var(--shadow-lg);
}

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

.card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
}

.card-badge {
    font-size: var(--font-size-xs);
    padding: 4px 10px;
    background: rgba(60, 141, 153, 0.1);
    color: var(--primary-main);
    border-radius: var(--radius-full);
    font-weight: 500;
}

/* ----------------------------------------
   Form Fields
   ---------------------------------------- */
.form-field {
    margin-bottom: var(--spacing-lg);
}

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

.field-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.field-label i {
    color: var(--primary-main);
    font-size: 14px;
    width: 16px;
    text-align: center;
}

.field-label.required::after {
    content: "*";
    color: var(--error);
    margin-left: 2px;
}

/* ----------------------------------------
   Inputs
   ---------------------------------------- */
.form-input,
.form-select {
    width: 100%;
    height: 48px;
    padding: 0 var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: all var(--transition-fast);
}

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

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-main);
    box-shadow: 0 0 0 3px rgba(60, 141, 153, 0.15);
    background: var(--bg-card);
}

.form-input:disabled,
.form-input[readonly] {
    background: var(--gray-100);
    cursor: pointer;
}

.form-select {
    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='%236B7280' 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 12px center;
    background-size: 16px;
    padding-right: 40px;
    cursor: pointer;
}

.form-select:disabled {
    background-color: var(--gray-100);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Input with Button */
.input-with-button {
    display: flex;
    gap: var(--spacing-sm);
}

.input-with-button .form-input {
    flex: 1;
}

.btn-verify {
    min-width: 80px;
    height: 48px;
    padding: 0 var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(60, 141, 153, 0.25);
}

.btn-verify:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(60, 141, 153, 0.35);
}

.btn-verify:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 16px;
}

.btn-icon:hover {
    border-color: var(--primary-main);
    color: var(--primary-main);
    background: rgba(60, 141, 153, 0.05);
}

/* Password Input */
.password-input-wrapper {
    position: relative;
}

.password-input-wrapper .form-input {
    padding-right: 48px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    font-size: 16px;
    transition: color var(--transition-fast);
}

.toggle-password:hover {
    color: var(--text-primary);
}

/* Date Input */
.date-input-wrapper {
    position: relative;
}

.date-input-wrapper .form-input {
    padding-right: 48px;
    cursor: pointer;
}

.date-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    font-size: 16px;
}

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

/* Address Select Group */
.address-select-group {
    display: flex;
    gap: var(--spacing-sm);
}

.address-select-group .form-select {
    flex: 1;
}

/* Verification Info */
.verification-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

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

.status.success {
    color: var(--success);
}

.status.error {
    color: var(--error);
}

/* Validation Message */
.validation-message {
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
    min-height: 18px;
}

.validation-message.error {
    color: var(--error);
}

.validation-message.success {
    color: var(--success);
}

/* ----------------------------------------
   Chip Group
   ---------------------------------------- */
.chip-group {
    display: flex;
    gap: var(--spacing-sm);
}

.chip-group-wrap {
    flex-wrap: wrap;
}

.chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    flex: 1;
    min-width: calc(30% - var(--spacing-sm) / 2);
}

.chip-group-wrap .chip {
    flex: 0 0 auto;
    min-width: auto;
}

.chip i {
    font-size: 14px;
}

.chip:hover {
    border-color: var(--primary-main);
    color: var(--text-primary);
    background: rgba(60, 141, 153, 0.05);
}

.chip.selected {
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    border-color: var(--primary-main);
    color: white;
    box-shadow: 0 4px 12px rgba(60, 141, 153, 0.25);
}

.chip:active {
    transform: scale(0.98);
}

/* ----------------------------------------
   Sub Section
   ---------------------------------------- */
.sub-section {
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    border: 1px solid var(--border-color);
}

.sub-section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.sub-section-title i {
    color: var(--primary-main);
    font-size: 14px;
}

.form-row {
    display: flex;
    gap: var(--spacing-md);
}

.flex-1 {
    flex: 1;
}

/* ----------------------------------------
   Agreement List
   ---------------------------------------- */
.agreement-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.agreement-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    border: 1px solid transparent;
}

.agreement-item:hover {
    background: var(--gray-100);
}

.agreement-item.all {
    background: rgba(60, 141, 153, 0.08);
    border: 1px solid rgba(60, 141, 153, 0.2);
}

.checkbox-wrapper {
    flex-shrink: 0;
    padding-top: 2px;
}

.checkbox-box {
    width: 22px;
    height: 22px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 12px;
    background: var(--bg-card);
}

.checkbox-box i {
    color: transparent;
    transition: color var(--transition-fast);
}

.checkbox-box.checked {
    background: var(--primary-main);
    border-color: var(--primary-main);
}

.checkbox-box.checked i {
    color: white;
}

.agreement-content {
    flex: 1;
}

.agreement-title {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.agreement-desc {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.required-badge {
    font-size: 10px;
    padding: 2px 6px;
    background: var(--error);
    color: white;
    border-radius: var(--radius-sm);
    margin-left: 4px;
    vertical-align: middle;
}

.optional-badge {
    font-size: 10px;
    padding: 2px 6px;
    background: var(--gray-400);
    color: white;
    border-radius: var(--radius-sm);
    margin-left: 4px;
    vertical-align: middle;
}

.agreement-link {
    flex-shrink: 0;
    color: var(--text-muted);
    padding: 4px;
    transition: color var(--transition-fast);
    font-size: 14px;
}

.agreement-link:hover {
    color: var(--primary-main);
}

.agreement-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-sm) 0;
}

/* ----------------------------------------
   Buttons
   ---------------------------------------- */
.btn-container {
    margin-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

.btn-container.two-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    height: 52px;
    padding: 0 var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex: 1;
}

.btn i {
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 12px rgba(60, 141, 153, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(60, 141, 153, 0.35);
}

.btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    border-color: var(--primary-main);
    color: var(--primary-main);
    background: rgba(60, 141, 153, 0.05);
}

.btn-large {
    height: 56px;
    font-size: var(--font-size-lg);
}

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

/* ----------------------------------------
   Step Content
   ---------------------------------------- */
.step-content {
    display: none;
}

.step-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* ----------------------------------------
   Completion Card
   ---------------------------------------- */
.completion-card {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.completion-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--success), #059669);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
    font-size: 36px;
    color: white;
}

.completion-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.completion-message {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ----------------------------------------
   Loading Overlay
   ---------------------------------------- */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(248, 250, 252, 0.9);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-overlay.active {
    display: flex;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.spinner {
    font-size: 40px;
    color: var(--primary-main);
}

.loading-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ----------------------------------------
   Modal
   ---------------------------------------- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-md);
}

.modal.active {
    display: flex;
}

.modal-content {
    width: 100%;
    max-width: 400px;
    max-height: 90vh;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-card);
}

.modal-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.modal-title i {
    color: var(--primary-main);
}

.modal-close {
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: color var(--transition-fast);
    border-radius: var(--radius-sm);
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--gray-100);
}

.modal-body {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    background: var(--bg-card);
}

.modal-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background: var(--bg-card);
}

/* Date Picker */
.date-picker-section {
    margin-bottom: var(--spacing-lg);
}

.date-picker-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.year-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    max-height: 200px;
    overflow-y: auto;
    padding: 2px;
}

.year-btn {
    padding: var(--spacing-sm);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.year-btn:hover {
    border-color: var(--primary-main);
    color: var(--text-primary);
}

.year-btn.selected {
    background: var(--primary-main);
    border-color: var(--primary-main);
    color: white;
}

.date-picker-row {
    display: flex;
    gap: var(--spacing-md);
}

/* ----------------------------------------
   Alert
   ---------------------------------------- */
.alert-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    width: 100%;
    max-width: 400px;
    padding: 0 var(--spacing-md);
}

.alert {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    margin-bottom: var(--spacing-sm);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert.hide {
    animation: slideUp 0.3s ease forwards;
}

@keyframes slideUp {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-20px); }
}

.alert-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.alert.success .alert-icon { color: var(--success); }
.alert.error .alert-icon { color: var(--error); }
.alert.warning .alert-icon { color: var(--warning); }
.alert.info .alert-icon { color: var(--info); }

.alert.success { border-left: 4px solid var(--success); }
.alert.error { border-left: 4px solid var(--error); }
.alert.warning { border-left: 4px solid var(--warning); }
.alert.info { border-left: 4px solid var(--info); }

.alert-message {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.alert-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
    transition: color var(--transition-fast);
}

.alert-close:hover {
    color: var(--text-primary);
}

/* ----------------------------------------
   Responsive
   ---------------------------------------- */
@media (max-width: 768px) {
    .signup-container {
        padding: var(--spacing-sm);
    }
    
    .signup-header {
        margin-left: calc(-1 * var(--spacing-sm));
        margin-right: calc(-1 * var(--spacing-sm));
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }
    
    .form-card {
        padding: var(--spacing-md);
        border-radius: var(--radius-lg);
    }
    
    .progress-line {
        width: 60px;
    }
    
    .step-circle {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .step-label {
        font-size: var(--font-size-xs);
    }
    
    .chip {
        padding: 10px var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .chip i {
        font-size: 12px;
    }
    
    .btn {
        height: 48px;
    }
    
    .address-select-group {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .form-row {
        flex-direction: column;
    }
    
    .btn-container.two-buttons {
        flex-direction: column;
    }
    
    .input-with-button {
        flex-direction: column;
    }
    
    .btn-verify {
        width: 100%;
    }
}

/* ----------------------------------------
   Scrollbar
   ---------------------------------------- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

#step1NextBtn {
    width: 100%;
}

/* ----------------------------------------
   Family Member Row (부모/조부모 선택)
   ---------------------------------------- */
.family-member-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
}

.family-member-row:last-child {
    margin-bottom: 0;
}

.family-member-content {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.family-member-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    min-width: 60px;
}

.family-select {
    flex: 1;
    height: 40px;
}

.family-input {
    flex: 1;
    height: 40px;
}

/* Checkbox in family row */
.family-member-row .checkbox-wrapper {
    cursor: pointer;
}

.family-member-row .checkbox-box {
    cursor: pointer;
}

/* ----------------------------------------
   Children Info (자녀 정보)
   ---------------------------------------- */
.child-info-item {
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
}

.child-info-item:last-child {
    margin-bottom: 0;
}

.child-info-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-main);
    margin-bottom: var(--spacing-md);
}

.child-info-row {
    display: flex;
    gap: var(--spacing-md);
}

.child-info-row .form-field {
    flex: 1;
    margin-bottom: 0;
}

.child-info-row .field-label {
    font-size: var(--font-size-xs);
    margin-bottom: var(--spacing-xs);
}

/* ----------------------------------------
   Multi-select chip group
   ---------------------------------------- */
.chip-group.multi-select .chip.selected {
    background: linear-gradient(135deg, var(--secondary-main), var(--secondary-dark));
    border-color: var(--secondary-main);
    box-shadow: 0 4px 12px rgba(111, 204, 180, 0.25);
}

/* ----------------------------------------
   Responsive additions
   ---------------------------------------- */
@media (max-width: 480px) {
    .family-member-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .family-select,
    .family-input {
        width: 100%;
    }
    
    .child-info-row {
        flex-direction: column;
    }
}

/* ----------------------------------------
   고대비 모드 지원
   ---------------------------------------- */
@media (prefers-contrast: high) {
    .form-input,
    .form-select {
        border-width: 2px;
    }
    
    .form-card {
        border-width: 2px;
    }
    
    .chip {
        border-width: 2px;
    }
}

/* ----------------------------------------
   모션 감소 설정 지원
   ---------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}
.modal.show {
    display: flex;
}