/* ===================================
   AKANUKE LAB - Hearing Form Styles
   Near-Future Design System
   WCAG 2.1 AA Compliant
   =================================== */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #eeeeee;
    --color-gray-300: #e0e0e0;
    --color-gray-400: #bdbdbd;
    --color-gray-500: #9e9e9e;
    --color-gray-600: #757575;
    --color-gray-700: #616161;
    --color-gray-800: #424242;
    --color-gray-900: #212121;
    
    /* Accent Colors */
    --color-primary: #1a1a2e;
    --color-primary-light: #16213e;
    --color-accent: #0f3460;
    --color-accent-light: #e94560;
    --color-glow: rgba(233, 69, 96, 0.3);
    --color-glow-blue: rgba(15, 52, 96, 0.3);
    
    /* Semantic Colors */
    --color-success: #4caf50;
    --color-error: #f44336;
    --color-warning: #ff9800;
    --color-info: #2196f3;
    
    /* Typography */
    --font-primary: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Orbitron', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 20px var(--color-glow);
    --shadow-glow-blue: 0 0 30px var(--color-glow-blue);
    
    /* Z-index */
    --z-base: 1;
    --z-dropdown: 10;
    --z-sticky: 100;
    --z-modal: 1000;
    --z-tooltip: 1100;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--spacing-md);
    outline: 3px solid var(--color-accent-light);
    outline-offset: 2px;
}

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

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-100) 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

/* Grid Lines Effect */
.grid-lines {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

/* Floating Particles */
.floating-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.floating-particles::before,
.floating-particles::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(80px);
}

.floating-particles::before {
    background: var(--color-accent);
    top: -200px;
    right: -100px;
    animation: float1 15s ease-in-out infinite;
}

.floating-particles::after {
    background: var(--color-accent-light);
    bottom: -200px;
    left: -100px;
    animation: float2 18s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-30px, 30px) scale(1.1); }
}

@keyframes float2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.1); }
}

/* Hero Content */
.hero-content {
    position: relative;
    text-align: center;
    z-index: var(--z-base);
    padding: var(--spacing-xl);
}

.logo-container {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-lg);
}

.logo-text {
    font-family: var(--font-display);
    font-size: clamp(2rem, 8vw, 4rem);
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.logo-glow {
    position: absolute;
    inset: -20px;
    background: radial-gradient(ellipse at center, var(--color-glow-blue), transparent 70%);
    opacity: 0.5;
    filter: blur(20px);
    z-index: -1;
    animation: logoGlow 3s ease-in-out infinite;
}

@keyframes logoGlow {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); }
}

.hero-title {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-lg);
    letter-spacing: 0.1em;
}

.hero-subtitle {
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
    color: var(--color-gray-600);
    line-height: 2;
    margin-bottom: 0;
}

/* Scroll Indicator */
.scroll-indicator {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.scroll-text {
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    color: var(--color-gray-500);
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--color-gray-400), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.5); opacity: 0.5; }
}

/* ===================================
   Browser Notice Section
   =================================== */
.browser-notice {
    padding: var(--spacing-xl) 0;
    background: #fff3e0;
}

.notice-box {
    background: var(--color-white);
    border: 2px solid #ff9800;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    box-shadow: 0 4px 20px rgba(255, 152, 0, 0.15);
}

.notice-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: #ff9800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.5rem;
}

.notice-content {
    flex: 1;
}

.notice-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #e65100;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.notice-title i {
    color: #06c755;
}

.notice-text {
    font-size: 0.95rem;
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.notice-text strong {
    color: #d32f2f;
}

.compass-icon {
    display: inline-block;
    font-size: 1.2em;
    vertical-align: middle;
}

.notice-steps {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.notice-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: #fff8e1;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--color-gray-700);
}

.notice-step-num {
    width: 20px;
    height: 20px;
    background: #ff9800;
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

@media (max-width: 576px) {
    .notice-box {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .notice-steps {
        justify-content: center;
    }
    
    .notice-title {
        justify-content: center;
        flex-wrap: wrap;
    }
}

/* ===================================
   Flow Section
   =================================== */
.flow-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-white);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.title-en {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(0.7rem, 2vw, 0.9rem);
    letter-spacing: 0.3em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.title-ja {
    display: block;
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 600;
    color: var(--color-gray-800);
    letter-spacing: 0.1em;
}

.flow-steps {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.flow-step {
    position: relative;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    width: 100%;
    max-width: 320px;
    text-align: center;
    transition: all var(--transition-normal);
}

.flow-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.step-number {
    position: absolute;
    top: -12px;
    left: var(--spacing-lg);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-white);
    background: var(--color-accent);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    letter-spacing: 0.1em;
}

.step-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--color-accent);
    transition: all var(--transition-normal);
}

.flow-step:hover .step-icon {
    background: var(--color-accent);
    color: var(--color-white);
    transform: scale(1.1);
}

.step-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-sm);
}

.step-desc {
    font-size: 0.85rem;
    color: var(--color-gray-600);
}

.flow-connector {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--color-gray-300), var(--color-gray-200));
}

/* ===================================
   Form Section
   =================================== */
.form-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-gray-50);
}

/* Form Introduction */
.form-intro {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--color-accent);
    position: relative;
    overflow: hidden;
}

.form-intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
}

.form-intro-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-accent), var(--color-primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--color-white);
    box-shadow: 0 8px 25px rgba(15, 52, 96, 0.3);
}

.form-intro-title {
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    font-weight: 700;
    color: var(--color-gray-800);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.form-intro-text {
    font-size: clamp(1rem, 3vw, 1.15rem);
    color: var(--color-gray-700);
    line-height: 2;
}

.highlight-box {
    display: inline-block;
    background: linear-gradient(135deg, #fff8e1, #ffecb3);
    color: var(--color-gray-800);
    font-weight: 700;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 2px solid #ffc107;
    margin-bottom: var(--spacing-sm);
    font-size: clamp(1rem, 3.5vw, 1.2rem);
}

.form-intro-time {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    color: var(--color-gray-700);
}

.form-intro-time i {
    color: var(--color-accent);
}

.form-intro-time strong {
    color: var(--color-accent);
}

@media (max-width: 576px) {
    .form-intro {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    .form-intro-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .form-intro-title br {
        display: none;
    }
}

.hearing-form {
    max-width: 800px;
    margin: 0 auto;
}

/* Fieldset */
.form-fieldset {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    transition: box-shadow var(--transition-normal);
}

.form-fieldset:hover {
    box-shadow: var(--shadow-md);
}

.fieldset-legend {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-800);
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.legend-number {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--color-white);
    background: var(--color-accent);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    letter-spacing: 0.1em;
}

.legend-text {
    letter-spacing: 0.05em;
}

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

.form-label {
    display: block;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-sm);
}

.required {
    color: var(--color-accent-light);
    margin-left: var(--spacing-xs);
}

/* Form Inputs */
.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-gray-800);
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-glow-blue);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--color-gray-400);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(244, 67, 54, 0.2);
}

.form-input.valid,
.form-select.valid,
.form-textarea.valid {
    border-color: var(--color-success);
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23757575'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    background-size: 24px;
    padding-right: calc(var(--spacing-md) * 3);
}

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

.form-hint {
    display: block;
    font-size: 0.8rem;
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
}

.form-error {
    display: block;
    font-size: 0.8rem;
    color: var(--color-error);
    margin-top: var(--spacing-xs);
    min-height: 1.2em;
}

/* Section Intro */
.section-intro {
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.section-intro p {
    margin-bottom: var(--spacing-sm);
}

.section-intro p:last-child {
    margin-bottom: 0;
}

.section-intro .note {
    font-size: 0.85rem;
    color: var(--color-gray-600);
}

.section-intro .note i {
    color: var(--color-accent);
    margin-right: var(--spacing-xs);
}

.legend-box {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-gray-700);
}

.circle-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: #7cb342;
    color: var(--color-white);
    border-radius: 50%;
    font-weight: 600;
    font-size: 0.85rem;
}

.cross-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: #e53935;
    color: var(--color-white);
    border-radius: 50%;
    font-weight: 600;
    font-size: 0.85rem;
}

/* Radio Group */
.radio-group-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.radio-group {
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.radio-label-container {
    margin-bottom: var(--spacing-md);
}

.radio-label-title {
    display: block;
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-xs);
}

.radio-label-desc {
    display: block;
    font-size: 0.85rem;
    color: var(--color-gray-600);
}

.radio-options {
    display: flex;
    gap: var(--spacing-md);
}

.radio-option {
    position: relative;
    cursor: pointer;
}

.radio-option input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-custom {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
}

.radio-option:hover .radio-custom {
    border-color: var(--color-gray-500);
    color: var(--color-gray-700);
}

/* ○ (Circle/Yes) - Yellow-Green when selected */
.radio-option input[value="○"]:checked + .radio-custom {
    background: #7cb342;
    border-color: #7cb342;
    color: var(--color-white);
    box-shadow: 0 0 15px rgba(124, 179, 66, 0.4);
}

.radio-option input[value="○"]:hover + .radio-custom,
.radio-option:hover input[value="○"] + .radio-custom {
    border-color: #7cb342;
    color: #7cb342;
}

/* × (Cross/No) - Red when selected */
.radio-option input[value="×"]:checked + .radio-custom {
    background: #e53935;
    border-color: #e53935;
    color: var(--color-white);
    box-shadow: 0 0 15px rgba(229, 57, 53, 0.4);
}

.radio-option input[value="×"]:hover + .radio-custom,
.radio-option:hover input[value="×"] + .radio-custom {
    border-color: #e53935;
    color: #e53935;
}

.radio-option input:focus + .radio-custom {
    outline: 3px solid rgba(0, 0, 0, 0.2);
    outline-offset: 2px;
}

/* Subsection */
.subsection {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-200);
}

.subsection:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.subsection-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-accent);
}

.subsection-title i {
    font-size: 1rem;
}

/* Status Item */
.status-item {
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

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

.status-header {
    margin-bottom: var(--spacing-md);
}

.status-title {
    font-weight: 600;
    color: var(--color-gray-800);
}

.status-desc {
    display: block;
    font-size: 0.85rem;
    color: var(--color-gray-600);
    margin-top: var(--spacing-xs);
}

.status-controls {
    margin-bottom: var(--spacing-md);
}

.status-reason {
    margin-top: var(--spacing-md);
}

.status-reason .form-textarea {
    min-height: 60px;
}

/* Fixed Progress Bar */
.fixed-progress {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    z-index: var(--z-sticky);
    padding: var(--spacing-md) var(--spacing-lg);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.fixed-progress.visible {
    transform: translateY(0);
}

.fixed-progress-inner {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.fixed-progress-info {
    flex-shrink: 0;
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
}

.fixed-progress-label {
    font-size: 0.85rem;
    color: var(--color-gray-600);
}

.fixed-progress-percent {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-accent);
}

.fixed-progress-bar {
    flex: 1;
    height: 10px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.fixed-progress-bar .progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-accent), #7cb342);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal), background var(--transition-normal);
}

.fixed-progress-bar.complete .progress-fill {
    background: linear-gradient(90deg, #7cb342, #4caf50);
}

.fixed-progress-status {
    flex-shrink: 0;
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
}

.fixed-progress-status.remaining {
    color: var(--color-accent-light);
}

.fixed-progress-status.complete {
    color: #4caf50;
}

/* Responsive for fixed progress */
@media (max-width: 576px) {
    .fixed-progress {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .fixed-progress-inner {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .fixed-progress-info {
        order: 1;
    }
    
    .fixed-progress-status {
        order: 2;
        margin-left: auto;
    }
    
    .fixed-progress-bar {
        order: 3;
        width: 100%;
        flex: none;
    }
}

/* Adjust scroll-top button position when progress bar is visible */
.fixed-progress.visible ~ .scroll-top-btn {
    bottom: calc(var(--spacing-xl) + 70px);
}

@media (max-width: 576px) {
    .fixed-progress.visible ~ .scroll-top-btn {
        bottom: calc(var(--spacing-xl) + 90px);
    }
}

/* Form Actions */
.form-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: linear-gradient(135deg, #06c755, #00b544);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(6, 199, 85, 0.3);
}

.btn-primary:hover:not(.disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(6, 199, 85, 0.4);
}

.btn-primary.disabled {
    background: var(--color-gray-300);
    cursor: not-allowed;
    box-shadow: none;
    pointer-events: none;
}

.btn-secondary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 15px var(--color-glow-blue);
}

.btn-secondary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--color-glow-blue);
}

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

.btn:focus {
    outline: 3px solid var(--color-glow-blue);
    outline-offset: 2px;
}

.form-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.form-note i {
    color: var(--color-accent);
    margin-right: var(--spacing-xs);
}

/* LINE Reminder Box */
.line-reminder {
    background: linear-gradient(135deg, #06c755 0%, #00b544 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    box-shadow: 0 8px 30px rgba(6, 199, 85, 0.3);
    animation: pulseGlow 2s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 8px 30px rgba(6, 199, 85, 0.3);
    }
    50% {
        box-shadow: 0 8px 40px rgba(6, 199, 85, 0.5);
    }
}

.line-reminder-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--color-white);
}

.line-reminder-content {
    flex: 1;
}

.line-reminder-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.line-reminder-text {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-md);
}

.line-reminder-text strong {
    color: #ffeb3b;
    font-weight: 700;
}

.line-reminder-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--color-white);
    color: #06c755;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.line-reminder-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.line-reminder-link:focus {
    outline: 3px solid var(--color-white);
    outline-offset: 2px;
}

.line-reminder-link i {
    font-size: 1.1rem;
}

/* Responsive adjustments for LINE reminder */
@media (max-width: 576px) {
    .line-reminder {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-lg);
    }
    
    .line-reminder-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .line-reminder-title {
        font-size: 1rem;
    }
    
    .line-reminder-text {
        font-size: 0.9rem;
    }
}

/* ===================================
   FAQ Section
   =================================== */
.faq-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-gray-50);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.faq-item[open] {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    cursor: pointer;
    list-style: none;
    font-weight: 600;
    color: var(--color-gray-800);
    transition: background var(--transition-fast);
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question:hover {
    background: var(--color-gray-50);
}

.faq-icon {
    flex-shrink: 0;
    color: var(--color-accent);
    font-size: 1.2rem;
}

.faq-q-text {
    flex: 1;
    font-size: 1rem;
}

.faq-toggle {
    flex-shrink: 0;
    color: var(--color-gray-400);
    transition: transform var(--transition-fast);
}

.faq-item[open] .faq-toggle {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    padding-left: calc(var(--spacing-lg) + 1.2rem + var(--spacing-md));
    color: var(--color-gray-700);
    font-size: 0.95rem;
    line-height: 1.8;
}

.faq-answer p {
    margin-bottom: var(--spacing-md);
}

.faq-answer ol,
.faq-answer ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.faq-answer li {
    margin-bottom: var(--spacing-sm);
}

.faq-note {
    background: #e3f2fd;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: #1565c0;
}

.faq-note i {
    margin-right: var(--spacing-sm);
}

.faq-device-guide {
    display: grid;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.device-guide {
    background: var(--color-gray-50);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.device-guide h4 {
    font-size: 0.95rem;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.device-guide h4 i {
    font-size: 1.1rem;
}

.device-guide ol {
    margin-bottom: 0;
    font-size: 0.9rem;
}

.search-keywords {
    background: #fff8e1;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    list-style: none;
    padding-left: var(--spacing-md);
}

.search-keywords li {
    padding: var(--spacing-sm) 0;
    font-family: monospace;
    font-size: 0.9rem;
    color: #e65100;
}

.search-keywords li::before {
    content: "🔍 ";
}

.faq-line-btn {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.btn-line {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, #06c755, #00b544);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px rgba(6, 199, 85, 0.3);
}

.btn-line:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(6, 199, 85, 0.4);
}

.btn-line:focus {
    outline: 3px solid rgba(6, 199, 85, 0.5);
    outline-offset: 2px;
}

@media (max-width: 576px) {
    .faq-answer {
        padding-left: var(--spacing-lg);
    }
    
    .faq-q-text {
        font-size: 0.9rem;
    }
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0;
}

.footer-content {
    text-align: center;
}

.footer-logo .logo-text {
    font-size: 1.5rem;
    color: var(--color-white);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
}

.footer-links a {
    color: var(--color-gray-300);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-links a:focus {
    outline: 2px solid var(--color-white);
    outline-offset: 2px;
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--color-gray-500);
}

/* ===================================
   Scroll to Top Button
   =================================== */
.scroll-top-btn {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 48px;
    height: 48px;
    background: var(--color-accent);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    z-index: var(--z-sticky);
    opacity: 0;
    visibility: hidden;
}

.scroll-top-btn[hidden] {
    display: block;
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.scroll-top-btn:focus {
    outline: 3px solid var(--color-glow-blue);
    outline-offset: 2px;
}

/* ===================================
   Animations
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Form fieldsets should always be visible for usability */
.form-fieldset.fade-in {
    opacity: 1;
    transform: translateY(0);
}

/* Delay classes for staggered animations */
.fade-in[data-delay="100"] { transition-delay: 100ms; }
.fade-in[data-delay="200"] { transition-delay: 200ms; }
.fade-in[data-delay="300"] { transition-delay: 300ms; }
.fade-in[data-delay="400"] { transition-delay: 400ms; }
.fade-in[data-delay="500"] { transition-delay: 500ms; }

/* ===================================
   Responsive Design (Mobile First)
   =================================== */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .form-actions {
        flex-direction: row;
        justify-content: center;
    }
    
    .btn {
        min-width: 180px;
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    .hero-subtitle br {
        display: none;
    }
    
    .flow-steps {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }
    
    .flow-step {
        flex: 0 0 calc(50% - var(--spacing-md));
        max-width: calc(50% - var(--spacing-md));
    }
    
    .flow-connector {
        display: none;
    }
    
    .form-fieldset {
        padding: var(--spacing-2xl);
    }
    
    .radio-options {
        gap: var(--spacing-lg);
    }
    
    .radio-custom {
        width: 56px;
        height: 56px;
        font-size: 1.25rem;
    }
    
    .legend-box {
        gap: var(--spacing-2xl);
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .flow-steps {
        flex-wrap: nowrap;
        gap: var(--spacing-lg);
    }
    
    .flow-step {
        flex: 1;
        max-width: 260px;
    }
    
    .flow-connector {
        display: block;
        width: 60px;
        height: 2px;
        background: linear-gradient(to right, var(--color-gray-300), var(--color-gray-200));
        align-self: center;
    }
    
    .status-item {
        display: grid;
        grid-template-columns: 1fr auto;
        grid-template-rows: auto auto;
        gap: var(--spacing-md);
        align-items: start;
    }
    
    .status-header {
        grid-column: 1;
        grid-row: 1;
        margin-bottom: 0;
    }
    
    .status-controls {
        grid-column: 2;
        grid-row: 1;
        margin-bottom: 0;
    }
    
    .status-reason {
        grid-column: 1 / -1;
        grid-row: 2;
        margin-top: 0;
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* ===================================
   Reduced Motion
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .fade-in {
        opacity: 1;
        transform: none;
    }
}

/* ===================================
   High Contrast Mode
   =================================== */
@media (prefers-contrast: high) {
    :root {
        --color-gray-300: #999999;
        --color-gray-400: #666666;
        --color-gray-500: #555555;
        --color-gray-600: #444444;
    }
    
    .form-input,
    .form-select,
    .form-textarea {
        border-width: 2px;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* ===================================
   Print Styles
   =================================== */
@media print {
    .hero-bg,
    .scroll-indicator,
    .scroll-top-btn,
    .form-actions,
    .progress-container {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }
    
    .form-fieldset {
        break-inside: avoid;
        page-break-inside: avoid;
    }
    
    body {
        font-size: 12pt;
        color: #000;
        background: #fff;
    }
}