/**
 * Dove Wallpaper - App Style CSS
 * Mobile-first PWA design - Emerald Green Theme (문고리 스타일)
 */

/* ===== CSS Variables ===== */
:root {
    /* Primary Colors - Emerald Green */
    --color-primary: #059669;
    --color-primary-dark: #047857;
    --color-primary-light: #10B981;
    --color-primary-gradient: linear-gradient(135deg, #059669 0%, #10B981 100%);

    /* Accent Colors */
    --color-accent: #059669;
    --color-accent-dark: #047857;
    --color-accent-light: #34D399;
    --color-accent-gradient: linear-gradient(135deg, #059669 0%, #10B981 100%);

    /* Secondary Colors */
    --color-secondary: #F59E0B;
    --color-secondary-light: #FBBF24;

    /* Background Colors */
    --color-bg: #F5F5F5;
    --color-bg-warm: #FAFAFA;
    --color-bg-card: #FFFFFF;
    --color-bg-dark: #111827;
    --color-bg-overlay: rgba(17, 24, 39, 0.9);

    /* Text Colors */
    --color-text: #111827;
    --color-text-light: #374151;
    --color-text-muted: #9CA3AF;
    --color-text-inverse: #FFFFFF;

    /* Status Colors */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;

    /* 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: 20px;
    --radius-full: 9999px;

    /* Shadows - Subtle like 문고리 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(5, 150, 105, 0.3);

    /* Typography */
    --font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 20px;
    --font-size-2xl: 26px;
    --font-size-3xl: 34px;

    /* Safe Areas */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);

    /* Bottom Nav Height */
    --bottom-nav-height: 70px;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body.app-mode {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 20px);
    overflow-x: hidden;
}

/* ===== App Main Container ===== */
.app-main {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: 0;
    min-height: 100vh;
}

/* ===== PWA Install Banner ===== */
.pwa-install-banner {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 20px);
    left: 50%;
    transform: translateX(-50%) translateY(200px);
    width: calc(100% - 32px);
    max-width: 420px;
    background: var(--color-bg-overlay);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: hidden;
}

.pwa-install-banner.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.install-banner-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    position: relative;
    z-index: 2;
}

.install-banner-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.install-banner-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.install-banner-text {
    flex: 1;
    min-width: 0;
}

.install-banner-text strong {
    display: block;
    color: var(--color-text-inverse);
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: 2px;
}

.install-banner-text span {
    display: block;
    color: rgba(255,255,255,0.7);
    font-size: var(--font-size-sm);
}

.install-banner-btn {
    background: var(--color-accent);
    color: var(--color-text);
    border: none;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.install-banner-btn:hover {
    background: var(--color-accent-light);
    transform: scale(1.05);
}

.install-banner-close {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 28px;
    height: 28px;
    background: rgba(255,255,255,0.2);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.install-banner-close:hover {
    background: rgba(255,255,255,0.3);
}

/* Antigravity Particles */
.install-banner-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    opacity: 0.6;
    animation: float-up 4s ease-in-out infinite;
}

@keyframes float-up {
    0% {
        transform: translateY(100px) scale(0);
        opacity: 0;
    }
    20% {
        opacity: 0.8;
    }
    80% {
        opacity: 0.4;
    }
    100% {
        transform: translateY(-50px) scale(1.5);
        opacity: 0;
    }
}

/* ===== Bottom Navigation ===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--bottom-nav-height) + var(--safe-bottom));
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    padding-top: 10px;
    padding-bottom: var(--safe-bottom);
    z-index: 999;
    transition: transform 0.3s ease;
}

.bottom-nav.hidden {
    transform: translateY(100%);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    padding: 4px 12px;
    transition: all 0.2s ease;
    position: relative;
}

.nav-item.active {
    color: var(--color-primary);
}

.nav-item .nav-icon {
    width: 26px;
    height: 26px;
    margin-bottom: 4px;
    transition: transform 0.2s ease;
}

.nav-item:active .nav-icon {
    transform: scale(0.9);
}

.nav-item-cta .cta-button {
    width: 56px;
    height: 56px;
    background: var(--color-primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -28px;
    box-shadow: 0 4px 16px rgba(5, 150, 105, 0.4);
    transition: all 0.3s ease;
    border: 4px solid white;
}

.nav-item-cta .cta-button .nav-icon {
    width: 26px;
    height: 26px;
    color: white;
    margin-bottom: 0;
}

.nav-item-cta:active .cta-button {
    transform: scale(0.95);
}

.nav-item-cta span {
    margin-top: 10px;
    color: var(--color-primary);
    font-weight: 600;
}

/* ===== Hero Section ===== */
.hero-section {
    background: var(--color-primary-gradient);
    padding: calc(var(--safe-top) + 24px) var(--spacing-md) var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></svg>');
    background-size: 120px;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--color-text-inverse);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #4ADE80;
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

.hero-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: var(--font-size-base);
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

/* Quick Calculator Card in Hero */
.hero-calculator {
    background: rgba(255,255,255,0.98);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
    box-shadow: var(--shadow-xl);
}

.hero-calc-title {
    color: var(--color-text);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-calc-title svg {
    width: 22px;
    height: 22px;
    color: var(--color-primary);
}

.calc-input-row {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.calc-input-group {
    flex: 1;
}

.calc-input-group label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: 6px;
}

.calc-input-wrapper {
    position: relative;
}

.calc-input-wrapper input,
.calc-input-wrapper select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    transition: all 0.2s ease;
}

.calc-input-wrapper input:focus,
.calc-input-wrapper select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.08);
}

.calc-input-wrapper .unit {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.btn-hero-calc {
    width: 100%;
    padding: 14px;
    background: var(--color-primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.btn-hero-calc:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(5, 150, 105, 0.3);
}

.btn-hero-calc svg {
    width: 20px;
    height: 20px;
}

/* ===== Action Grid ===== */
.action-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-md);
    background: var(--color-bg-card);
}

.action-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    padding: var(--spacing-md) var(--spacing-sm);
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
}

.action-item:active {
    background: var(--color-bg-warm);
    transform: scale(0.95);
}

.action-icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg-warm);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    font-size: 24px;
}

.action-item:nth-child(1) .action-icon { background: #FFF3E0; }
.action-item:nth-child(2) .action-icon { background: #E8F5E9; }
.action-item:nth-child(3) .action-icon { background: #E3F2FD; }
.action-item:nth-child(4) .action-icon { background: #FCE4EC; }

.action-label {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    font-weight: 500;
    text-align: center;
}

/* ===== Section Headers ===== */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
}

.section-title-sub {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: 4px;
}

.section-link {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ===== Calculator Cards ===== */
.calculator-section {
    padding-bottom: var(--spacing-lg);
}

.calculator-scroll {
    display: flex;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-md);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.calculator-scroll::-webkit-scrollbar {
    display: none;
}

.calc-card {
    flex: 0 0 280px;
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    text-decoration: none;
    box-shadow: var(--shadow-md);
    scroll-snap-align: start;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.calc-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.calc-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.calc-card-icon {
    width: 56px;
    height: 56px;
    background: var(--color-bg-warm);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    flex-shrink: 0;
}

.calc-card-info {
    flex: 1;
}

.calc-card-badge {
    display: inline-block;
    padding: 3px 8px;
    background: var(--color-accent-light);
    color: var(--color-primary-dark);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
}

.calc-card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
}

.calc-card-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.calc-card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.calc-feature-tag {
    padding: 4px 10px;
    background: var(--color-bg);
    color: var(--color-text-light);
    font-size: var(--font-size-xs);
    border-radius: var(--radius-full);
}

/* ===== Price Reference Table ===== */
.price-section {
    background: var(--color-bg-card);
    padding: var(--spacing-lg) 0;
    margin: var(--spacing-lg) 0;
}

.price-tabs {
    display: flex;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-md);
    overflow-x: auto;
    scrollbar-width: none;
}

.price-tabs::-webkit-scrollbar {
    display: none;
}

.price-tab {
    flex-shrink: 0;
    padding: 10px 20px;
    background: var(--color-bg);
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.price-tab.active {
    background: var(--color-primary);
    color: white;
}

.price-table {
    padding: 0 var(--spacing-md);
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.price-row:last-child {
    border-bottom: none;
}

.price-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.price-pyeong {
    font-weight: 600;
    color: var(--color-text);
}

.price-rooms {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.price-value {
    text-align: right;
}

.price-amount {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
}

.price-unit {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.price-note {
    padding: var(--spacing-md);
    margin: var(--spacing-md) var(--spacing-md) 0;
    background: var(--color-bg-warm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.5;
}

/* ===== Guide Cards ===== */
.guide-section {
    padding: var(--spacing-lg) var(--spacing-md);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.guide-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.guide-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.guide-card-image {
    width: 100%;
    height: 100px;
    background: var(--color-bg-warm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}

.guide-card-content {
    padding: var(--spacing-md);
}

.guide-card-category {
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.guide-card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== CTA Banner ===== */
.cta-banner {
    margin: var(--spacing-lg) var(--spacing-md);
    background: var(--color-primary-gradient);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.cta-icon {
    width: 64px;
    height: 64px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 32px;
}

.cta-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.cta-desc {
    font-size: var(--font-size-base);
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: white;
    color: var(--color-primary-dark);
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.cta-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

/* ===== Trust Indicators ===== */
.trust-section {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--color-bg-warm);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    text-align: center;
}

.trust-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.trust-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.trust-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* ===== Floating Action Buttons ===== */
.fab-container {
    position: fixed;
    right: var(--spacing-md);
    bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 80px);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 998;
}

.fab {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.fab:active {
    transform: scale(0.95);
}

.fab svg {
    width: 24px;
    height: 24px;
}

.fab-kakao {
    background: #FEE500;
    color: #3C1E1E;
}

.fab-phone {
    background: var(--color-success);
    color: white;
}

/* ===== Toast Notification ===== */
.toast {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 30px);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-text);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 1002;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    width: 100%;
    max-width: 480px;
    background: var(--color-bg-card);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-overlay.show .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.modal-close {
    width: 36px;
    height: 36px;
    background: var(--color-bg);
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
}

.modal-body {
    padding: var(--spacing-lg);
}

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

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.input-with-unit {
    position: relative;
}

.input-with-unit input {
    width: 100%;
    padding: 14px 50px 14px 16px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    color: var(--color-text);
    background: var(--color-bg);
}

.input-with-unit input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.input-with-unit .unit {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-weight: 500;
}

.radio-group {
    display: flex;
    gap: var(--spacing-sm);
}

.radio-card {
    flex: 1;
    position: relative;
}

.radio-card input {
    position: absolute;
    opacity: 0;
}

.radio-label {
    display: block;
    padding: 14px;
    text-align: center;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.radio-card input:checked + .radio-label {
    border-color: var(--color-primary);
    background: rgba(5, 150, 105, 0.05);
    color: var(--color-primary);
}

.btn-calculate {
    width: 100%;
    padding: 16px;
    background: var(--color-primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.btn-calculate svg {
    width: 20px;
    height: 20px;
}

/* ===== Result Display ===== */
.quick-calc-result {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-bg-warm);
    border-radius: var(--radius-lg);
    text-align: center;
}

.result-price {
    margin-bottom: var(--spacing-md);
}

.result-price .label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: 8px;
}

.result-price .price {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.result-price .won {
    font-size: var(--font-size-xl);
    color: var(--color-text);
    margin-left: 4px;
}

.result-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.btn-full-estimate {
    display: inline-block;
    padding: 12px 24px;
    background: var(--color-text);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all 0.3s ease;
}

/* ===== AdSense Containers ===== */
.ad-container {
    padding: var(--spacing-md);
    background: var(--color-bg);
    text-align: center;
}

.ad-native {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin: var(--spacing-md);
}

.ad-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

/* ===== Calculator Page Styles ===== */
.calc-page {
    padding-top: var(--safe-top);
}

.calc-header {
    position: sticky;
    top: 0;
    background: var(--color-bg-card);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    z-index: 100;
}

.calc-back {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    text-decoration: none;
}

.calc-back svg {
    width: 24px;
    height: 24px;
}

.calc-page-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.calc-body {
    padding: var(--spacing-lg);
}

.calc-step {
    margin-bottom: var(--spacing-xl);
}

.calc-step-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.calc-step-number {
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.calc-step-title {
    font-size: var(--font-size-base);
    font-weight: 600;
}

/* Slider Input */
.slider-input {
    margin-bottom: var(--spacing-sm);
}

.slider-track {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    background: var(--color-bg);
    border-radius: var(--radius-full);
    outline: none;
}

.slider-track::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(5, 150, 105, 0.3);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
}

.slider-value {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
}

/* Option Grid */
.option-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.option-card {
    padding: var(--spacing-md);
    border: 2px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.option-card.selected {
    border-color: var(--color-primary);
    background: rgba(5, 150, 105, 0.05);
}

.option-card-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-sm);
}

.option-card-title {
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.option-card-price {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

/* Result Box */
.calc-result-box {
    background: var(--color-primary-gradient);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    color: white;
    margin-top: var(--spacing-xl);
}

.calc-result-label {
    font-size: var(--font-size-base);
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.calc-result-value {
    font-size: 56px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 4px;
}

.calc-result-unit {
    font-size: var(--font-size-xl);
    opacity: 0.9;
}

.calc-result-detail {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255,255,255,0.2);
    text-align: left;
}

.calc-detail-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: var(--font-size-sm);
}

.calc-detail-row span:first-child {
    opacity: 0.8;
}

/* ===== Loading States ===== */
.loading {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.skeleton {
    background: linear-gradient(90deg, var(--color-bg) 25%, var(--color-bg-warm) 50%, var(--color-bg) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== Animations ===== */
.animate-number {
    animation: countUp 0.5s ease-out;
}

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

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp 0.4s ease-out;
}

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

/* ===== Responsive Adjustments ===== */
@media (min-width: 480px) {
    .app-main {
        box-shadow: 0 0 40px rgba(0,0,0,0.1);
    }

    body.app-mode {
        background: #E8E4E0;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== Calculator Page Additional Styles ===== */
.calc-intro {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-lg);
}

.calc-intro-icon {
    font-size: 56px;
    margin-bottom: var(--spacing-md);
}

.calc-intro-desc {
    color: var(--color-text-light);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

.calc-cta {
    background: var(--color-bg-warm);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    margin: var(--spacing-xl) 0;
}

.calc-cta p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.btn-estimate {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--color-primary-gradient);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-estimate:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(5, 150, 105, 0.3);
}

.btn-estimate svg {
    width: 20px;
    height: 20px;
}

.related-calcs {
    margin-top: var(--spacing-xl);
}

.related-calcs h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.related-calc-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.related-calc-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all 0.2s ease;
}

.related-calc-item:active {
    transform: scale(0.95);
}

.related-calc-icon {
    font-size: 28px;
    margin-bottom: var(--spacing-sm);
}

.related-calc-title {
    font-size: var(--font-size-xs);
    color: var(--color-text);
    text-align: center;
    line-height: 1.3;
}

/* Quick Start Section (mungori style) */
.quick-start-section {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    padding: var(--spacing-xl) var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.quick-start-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.quick-start-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
}

.quick-start-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.2);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.quick-start-badge-dot {
    width: 8px;
    height: 8px;
    background: #4ADE80;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

.quick-start-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.quick-start-subtitle {
    font-size: var(--font-size-base);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.quick-start-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: white;
    color: var(--color-primary-dark);
    border-radius: var(--radius-full);
    font-size: var(--font-size-lg);
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.quick-start-btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 32px rgba(0,0,0,0.3);
}

.quick-start-btn svg {
    width: 22px;
    height: 22px;
}

.quick-start-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255,255,255,0.15);
}

.quick-start-stat {
    text-align: center;
}

.quick-start-stat-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.quick-start-stat-label {
    font-size: var(--font-size-xs);
    opacity: 0.7;
    margin-top: 4px;
}

/* Ad Space Between Sections */
.ad-space {
    padding: var(--spacing-lg) var(--spacing-md);
    background: var(--color-bg-warm);
    text-align: center;
}

.ad-space-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ad-space-native {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    min-height: 100px;
}

/* Guide Page Styles */
.guide-page {
    padding-top: var(--safe-top);
}

.guide-header {
    position: sticky;
    top: 0;
    background: var(--color-bg-card);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    z-index: 100;
}

.guide-back {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    text-decoration: none;
}

.guide-back svg {
    width: 24px;
    height: 24px;
}

.guide-page-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.guide-body {
    padding: var(--spacing-lg);
}

.guide-list-page {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.guide-list-item {
    display: flex;
    gap: var(--spacing-md);
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.guide-list-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.guide-list-thumb {
    width: 80px;
    height: 80px;
    background: var(--color-bg-warm);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 36px;
}

.guide-list-content {
    flex: 1;
    min-width: 0;
}

.guide-list-category {
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.guide-list-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
    line-height: 1.4;
}

.guide-list-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.guide-list-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.guide-article {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.guide-article-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.guide-article-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

.guide-article-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.guide-article-content {
    line-height: 1.8;
    font-size: var(--font-size-base);
}

.guide-article-content h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.guide-article-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.guide-article-content p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

.guide-article-content ul,
.guide-article-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.guide-article-content li {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

.guide-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
    font-size: var(--font-size-sm);
}

.guide-article-content th,
.guide-article-content td {
    padding: var(--spacing-md);
    border: 1px solid rgba(0, 0, 0, 0.08);
    text-align: left;
}

.guide-article-content th {
    background: var(--color-bg-warm);
    font-weight: 600;
    color: var(--color-text);
}

.guide-article-content blockquote {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-warm);
    border-left: 4px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #1A1816;
        --color-bg-warm: #252220;
        --color-bg-card: #2A2725;
        --color-text: #F5F3F0;
        --color-text-light: #A8A4A0;
        --color-text-muted: #6B6865;
    }

    .bottom-nav {
        background: rgba(42, 39, 37, 0.95);
    }
}