/**
 * responsive.css - 반응형 스타일
 * 블로그 자동화 웹사이트
 * Mobile-first responsive design
 */

/* ===========================
   Mobile First Base (< 640px)
   =========================== */

/* Typography */
h1 {
    font-size: var(--font-size-3xl);
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

/* Container */
.container {
    padding: 0 var(--space-4);
}

/* Header */
.header-inner {
    height: var(--header-height-mobile);
}

.site-main {
    padding-top: var(--header-height-mobile);
}

.logo-text {
    font-size: var(--font-size-lg);
}

.logo-icon {
    width: 36px;
    height: 36px;
}

/* Mobile Navigation */
.mobile-nav {
    top: var(--header-height-mobile);
}

/* Page Header */
.page-header {
    padding: var(--space-12) 0 var(--space-10);
}

.page-header .page-title {
    font-size: var(--font-size-2xl);
}

/* Sections */
.section {
    padding: var(--space-12) 0;
}

.section-lg {
    padding: var(--space-16) 0;
}

.section-header {
    margin-bottom: var(--space-8);
}

.section-title {
    font-size: var(--font-size-2xl);
}

.section-subtitle {
    font-size: var(--font-size-base);
}

/* Footer */
.footer-top {
    padding: var(--space-10) 0 var(--space-8);
}

.footer-grid {
    gap: var(--space-8);
}

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

.footer-logo {
    justify-content: center;
}

.footer-col ul {
    align-items: center;
}

/* Floating Buttons */
.floating-contact {
    bottom: var(--space-4);
    right: var(--space-4);
}

.floating-btn {
    width: 48px;
    height: 48px;
}

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

.scroll-top {
    bottom: var(--space-4);
    right: calc(var(--space-4) + 60px);
    width: 40px;
    height: 40px;
}

/* Cards */
.feature-card {
    padding: var(--space-6);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-4);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.pricing-card {
    padding: var(--space-6);
}

.pricing-card.featured {
    transform: none;
}

/* Forms */
.form-input,
.form-textarea,
.form-select {
    padding: var(--space-3);
    font-size: var(--font-size-base);
}

/* Buttons */
.btn {
    padding: var(--space-3) var(--space-5);
}

.btn-lg {
    padding: var(--space-3) var(--space-6);
}

/* Service Card */
.service-card {
    flex-direction: column;
    text-align: center;
}

.service-card .service-icon {
    margin: 0 auto;
}

/* Stats */
.stats-card {
    padding: var(--space-6);
}

.stats-number {
    font-size: var(--font-size-4xl);
}

/* Accordion */
.accordion-header {
    padding: var(--space-4) var(--space-5);
    font-size: var(--font-size-base);
}

.accordion-content {
    padding: 0 var(--space-5) var(--space-5);
}

/* ===========================
   Small Mobile (>= 375px)
   =========================== */
@media (min-width: 375px) {
    .slide-buttons {
        flex-direction: column;
        align-items: center;
    }

    .slide-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}

/* ===========================
   Large Mobile (>= 480px)
   =========================== */
@media (min-width: 480px) {
    .container {
        padding: 0 var(--space-5);
    }

    .slide-buttons {
        flex-direction: row;
    }

    .slide-buttons .btn {
        width: auto;
        max-width: none;
    }

    .footer-bottom-inner {
        gap: var(--space-3);
    }
}

/* ===========================
   Tablet (>= 640px)
   =========================== */
@media (min-width: 640px) {
    /* Typography */
    h1 {
        font-size: var(--font-size-4xl);
    }

    h2 {
        font-size: var(--font-size-3xl);
    }

    h3 {
        font-size: var(--font-size-2xl);
    }

    /* Container */
    .container {
        padding: 0 var(--space-6);
    }

    /* Section */
    .section {
        padding: var(--space-16) 0;
    }

    .section-header {
        margin-bottom: var(--space-10);
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    /* Page Header */
    .page-header {
        padding: var(--space-16) 0 var(--space-12);
    }

    .page-header .page-title {
        font-size: var(--font-size-3xl);
    }

    /* Grids */
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        text-align: left;
    }

    .footer-col {
        text-align: left;
    }

    .footer-logo {
        justify-content: flex-start;
    }

    .footer-col ul {
        align-items: flex-start;
    }

    .footer-bottom-inner {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    /* Service Card */
    .service-card {
        flex-direction: row;
        text-align: left;
    }

    .service-card .service-icon {
        margin: 0;
    }

    /* Cards */
    .feature-card {
        padding: var(--space-8);
    }

    .feature-icon {
        width: 80px;
        height: 80px;
        margin-bottom: var(--space-6);
    }

    /* Stats */
    .stats-grid {
        display: flex;
        justify-content: center;
        gap: var(--space-8);
    }

    /* Testimonials */
    .testimonial-card {
        padding: var(--space-8);
    }
}

/* ===========================
   Small Desktop (>= 768px)
   =========================== */
@media (min-width: 768px) {
    /* Header */
    .header-inner {
        height: var(--header-height);
    }

    .site-main {
        padding-top: var(--header-height);
    }

    .mobile-nav {
        top: var(--header-height);
    }

    .logo-text {
        font-size: var(--font-size-xl);
    }

    .logo-icon {
        width: 40px;
        height: 40px;
    }

    /* Pricing Cards */
    .pricing-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }

    .pricing-card {
        padding: var(--space-8);
    }

    /* Timeline */
    .timeline {
        padding-left: var(--space-10);
    }

    /* Modal */
    .modal {
        max-width: 600px;
    }
}

/* ===========================
   Desktop (>= 1024px)
   =========================== */
@media (min-width: 1024px) {
    /* Typography */
    h1 {
        font-size: var(--font-size-5xl);
    }

    h2 {
        font-size: var(--font-size-4xl);
    }

    /* Header */
    .main-nav {
        display: block;
    }

    .mobile-menu-toggle {
        display: none;
    }

    .mobile-nav {
        display: none;
    }

    /* Section */
    .section {
        padding: var(--space-20) 0;
    }

    .section-lg {
        padding: var(--space-24) 0;
    }

    .section-title {
        font-size: var(--font-size-4xl);
    }

    /* Page Header */
    .page-header {
        padding: var(--space-20) 0 var(--space-16);
    }

    .page-header .page-title {
        font-size: var(--font-size-4xl);
    }

    /* Grids */
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }

    /* Footer */
    .footer-top {
        padding: var(--space-16) 0 var(--space-12);
    }

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
    }

    .footer-bottom-inner {
        justify-content: space-between;
        text-align: left;
    }

    /* Floating Buttons */
    .floating-contact {
        bottom: var(--space-8);
        right: var(--space-8);
    }

    .floating-btn {
        width: 56px;
        height: 56px;
    }

    .floating-btn svg {
        width: 24px;
        height: 24px;
    }

    .scroll-top {
        bottom: var(--space-8);
        right: calc(var(--space-8) + 72px);
        width: 48px;
        height: 48px;
    }

    /* Pricing Grid */
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .pricing-card.featured {
        transform: scale(1.05);
    }

    /* Two Column Layout */
    .two-col {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-12);
        align-items: center;
    }

    .two-col.reverse {
        direction: rtl;
    }

    .two-col.reverse > * {
        direction: ltr;
    }

    /* Sidebar Layout */
    .with-sidebar {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: var(--space-8);
    }

    .with-sidebar.sidebar-left {
        grid-template-columns: 320px 1fr;
    }
}

/* ===========================
   Large Desktop (>= 1200px)
   =========================== */
@media (min-width: 1200px) {
    .container {
        max-width: var(--container-xl);
    }

    /* Navigation spacing */
    .nav-list {
        gap: var(--space-2);
    }

    .nav-item > a {
        padding: var(--space-3) var(--space-5);
    }

    /* Hero Slider */
    .slide-title {
        font-size: var(--font-size-6xl);
    }

    .slide-description {
        font-size: var(--font-size-xl);
        max-width: 700px;
    }
}

/* ===========================
   Extra Large Desktop (>= 1400px)
   =========================== */
@media (min-width: 1400px) {
    .container {
        max-width: var(--container-2xl);
    }

    /* Wider content areas */
    .section-subtitle {
        max-width: 800px;
    }
}

/* ===========================
   Print Styles
   =========================== */
@media print {
    /* Hide non-essential elements */
    .site-header,
    .site-footer,
    .floating-contact,
    .scroll-top,
    .mobile-nav,
    .hero-slider,
    .antigravity-effects,
    .noise-overlay,
    .pixel-rain-container,
    .zero-g-container {
        display: none !important;
    }

    /* Reset colors */
    body {
        background: white;
        color: black;
    }

    /* Ensure content is visible */
    .site-main {
        padding-top: 0;
    }

    /* Links */
    a {
        text-decoration: underline;
    }

    a[href^="http"]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }

    /* Avoid breaks */
    h1, h2, h3, h4, h5, h6 {
        page-break-after: avoid;
    }

    img, table, figure {
        page-break-inside: avoid;
    }

    /* Page margins */
    @page {
        margin: 2cm;
    }
}

/* ===========================
   High Contrast Mode
   =========================== */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --border-light: #333333;
        --text-secondary: #333333;
    }

    .btn-primary {
        border: 2px solid var(--text-inverse);
    }

    .card,
    .feature-card,
    .pricing-card,
    .accordion {
        border-width: 2px;
    }
}

/* ===========================
   Dark Mode Support
   =========================== */
@media (prefers-color-scheme: dark) {
    /*
     * This site uses monochrome scheme,
     * but we can enhance dark mode experience
     * if the user prefers it
     */
}

/* ===========================
   Touch Device Optimizations
   =========================== */
@media (hover: none) and (pointer: coarse) {
    /* Larger touch targets */
    .btn {
        min-height: 44px;
    }

    .nav-item > a,
    .mobile-nav-list > li > a,
    .submenu li a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    /* Remove hover effects that don't work on touch */
    .hover-lift:hover,
    .hover-scale:hover {
        transform: none;
    }

    /* Ensure tap highlight */
    a, button {
        -webkit-tap-highlight-color: rgba(26, 26, 46, 0.1);
    }
}

/* ===========================
   Landscape Mobile
   =========================== */
@media (max-height: 500px) and (orientation: landscape) {
    .hero-slider {
        min-height: 400px;
    }

    .slider-container {
        height: 100vh;
        min-height: 400px;
    }

    .slide-title {
        font-size: var(--font-size-2xl);
    }

    .slide-description {
        font-size: var(--font-size-sm);
        margin-bottom: var(--space-4);
    }

    .scroll-indicator {
        display: none;
    }
}

/* ===========================
   Safe Area Insets (iPhone X+)
   =========================== */
@supports (padding: max(0px)) {
    .site-header {
        padding-left: max(var(--space-4), env(safe-area-inset-left));
        padding-right: max(var(--space-4), env(safe-area-inset-right));
    }

    .site-footer {
        padding-bottom: max(var(--space-6), env(safe-area-inset-bottom));
    }

    .floating-contact {
        bottom: max(var(--space-4), env(safe-area-inset-bottom));
        right: max(var(--space-4), env(safe-area-inset-right));
    }

    .scroll-top {
        bottom: max(var(--space-4), env(safe-area-inset-bottom));
    }
}