/* ========================================
   KANBAN GRATUIT
   Design: Clean & Modern
   ======================================== */

/* CSS Variables */
:root {
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-subtle: #f1f5f9;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-text-light: #94a3b8;
    --color-primary: #06a89d;
    --color-primary-hover: #058f86;
    --color-primary-light: #d1faf7;
    --color-border: #e2e8f0;
    --color-border-strong: #cbd5e1;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-danger-light: #fee2e2;
    
    /* Card colors */
    --card-blue: #dbeafe;
    --card-blue-border: #3b82f6;
    --card-green: #dcfce7;
    --card-green-border: #22c55e;
    --card-yellow: #fef9c3;
    --card-yellow-border: #eab308;
    --card-orange: #ffedd5;
    --card-orange-border: #f97316;
    --card-red: #fee2e2;
    --card-red-border: #ef4444;
    --card-purple: #f3e8ff;
    --card-purple-border: #a855f7;
    
    --font-main: 'DM Sans', system-ui, -apple-system, sans-serif;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08);
    --transition: 150ms ease;
}

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

/* Base */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg-alt);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   TOP NAVBAR
   ======================================== */
.top-navbar {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--color-text);
}

.navbar-logo img {
    height: 36px;
    width: auto;
}

.navbar-brand {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
}

.navbar-brand em {
    font-style: italic;
    font-weight: 400;
    color: var(--color-primary);
}

/* Navbar Toggle (Mobile) */
.navbar-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.navbar-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.navbar-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggle.active span:nth-child(2) {
    opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Navbar Menu */
.navbar-menu {
    display: flex;
    align-items: center;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-item > a {
    display: block;
    padding: 10px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.nav-item > a:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

/* Submenu */
.nav-item.has-submenu > a::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 6px;
    vertical-align: middle;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
}

.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    list-style: none;
    margin: 0;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s ease;
    z-index: 200;
    max-height: 400px;
    overflow-y: auto;
}

.nav-item.has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu li a {
    display: block;
    padding: 10px 16px;
    font-size: 0.85rem;
    color: var(--color-text);
    text-decoration: none;
    transition: all var(--transition);
}

.submenu li a:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

/* Mobile Navbar */
@media (max-width: 900px) {
    .navbar-toggle {
        display: flex;
    }
    
    .navbar-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        flex-direction: column;
        align-items: stretch;
        padding: 24px;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
    }
    
    .navbar-menu.active {
        transform: translateX(0);
    }
    
    .navbar-nav {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }
    
    .nav-item > a {
        padding: 14px 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--color-border);
        border-radius: 0;
    }
    
    .nav-item > a:hover {
        background: transparent;
    }
    
    /* Mobile submenu */
    .nav-item.has-submenu > a::after {
        float: right;
        margin-top: 4px;
    }
    
    .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-radius: 0;
        max-height: 0;
        overflow: hidden;
        padding: 0;
        transition: max-height 0.3s ease;
    }
    
    .nav-item.has-submenu.open .submenu {
        max-height: 1000px;
        padding: 8px 0;
    }
    
    .nav-item.has-submenu.open > a::after {
        transform: rotate(180deg);
    }
    
    .submenu li a {
        padding: 10px 20px;
    }
}

/* ========================================
   HERO (HOME PAGE)
   ======================================== */
.hero {
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-primary-light) 100%);
    border-bottom: 1px solid var(--color-border);
    padding: 64px 0;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero h1 .highlight {
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* ========================================
   TOOLS SECTION (HOME PAGE)
   ======================================== */
.tools-section {
    margin-bottom: 64px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.tool-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition);
}

.tool-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.tool-card:hover .tool-arrow {
    transform: translateX(4px);
}

.tool-card-coming {
    opacity: 0.6;
    cursor: default;
}

.tool-card-coming:hover {
    transform: none;
    border-color: var(--color-border);
    box-shadow: none;
}

.tool-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    border-radius: var(--radius-md);
    color: var(--color-primary);
}

.tool-content {
    flex: 1;
}

.tool-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.tool-content p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    margin-bottom: 8px;
}

.tool-badge {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-success);
    background: rgba(16, 185, 129, 0.1);
    border-radius: 20px;
}

.tool-badge-soon {
    color: var(--color-text-muted);
    background: var(--color-bg-subtle);
}

.tool-arrow {
    flex-shrink: 0;
    color: var(--color-text-muted);
    transition: transform var(--transition);
}

/* ========================================
   FEATURES SECTION (HOME PAGE)
   ======================================== */
.features-section {
    margin-bottom: 64px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ========================================
   HEADER (TOOL PAGES)
   ======================================== */
.header {
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
    border-bottom: 1px solid var(--color-border);
    padding: 32px 0 24px;
    text-align: center;
}

.header h1 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.header h1 .highlight {
    color: var(--color-primary);
    font-weight: 600;
}

.header .subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   MAIN APP
   ======================================== */
.main {
    padding: 24px 0 48px;
    min-height: 60vh;
}

/* Toolbar */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
}

.toolbar-left,
.toolbar-right {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    white-space: nowrap;
}

.btn svg {
    flex-shrink: 0;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-border-strong);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    padding: 8px 12px;
}

.btn-ghost:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.btn-danger {
    color: var(--color-danger);
}

.btn-danger:hover {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

.btn-small {
    padding: 6px 10px;
    font-size: 0.8rem;
}

/* ========================================
   KANBAN BOARD
   ======================================== */
.board {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 20px;
    min-height: 400px;
    align-items: flex-start;
}

/* Column */
.column {
    flex: 0 0 300px;
    min-width: 300px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 250px);
}

.column.dragging {
    opacity: 0.5;
}

.column.drag-over {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.column-header {
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: grab;
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.column-header:active {
    cursor: grabbing;
}

.column-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.column-count {
    background: var(--color-bg-subtle);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 10px;
}

.column-actions {
    display: flex;
    gap: 4px;
}

.column-btn {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.column-btn:hover {
    background: var(--color-bg-subtle);
    color: var(--color-text);
}

.column-cards {
    padding: 12px;
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 100px;
}

.column-cards.drag-over {
    background: var(--color-primary-light);
}

/* Add card button */
.add-card-btn {
    margin: 0 12px 12px;
    padding: 10px;
    background: transparent;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.add-card-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light);
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px;
    cursor: grab;
    transition: all var(--transition);
    box-shadow: var(--shadow-card);
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-strong);
}

.card:active {
    cursor: grabbing;
}

.card.dragging {
    opacity: 0.5;
    transform: rotate(3deg);
}

.card.drag-ghost {
    opacity: 0.3;
}

/* Card colors */
.card.color-blue {
    background: var(--card-blue);
    border-left: 3px solid var(--card-blue-border);
}

.card.color-green {
    background: var(--card-green);
    border-left: 3px solid var(--card-green-border);
}

.card.color-yellow {
    background: var(--card-yellow);
    border-left: 3px solid var(--card-yellow-border);
}

.card.color-orange {
    background: var(--card-orange);
    border-left: 3px solid var(--card-orange-border);
}

.card.color-red {
    background: var(--card-red);
    border-left: 3px solid var(--card-red-border);
}

.card.color-purple {
    background: var(--card-purple);
    border-left: 3px solid var(--card-purple-border);
}

.card-title {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 4px;
    word-wrap: break-word;
}

.card-desc {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    word-wrap: break-word;
}

.card-meta {
    margin-top: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-date {
    font-size: 0.7rem;
    color: var(--color-text-light);
}

/* ========================================
   MODALS
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    overflow-y: auto;
    padding: 40px 20px;
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.modal-content {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 100%;
    padding: 32px;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

.modal-small {
    max-width: 400px;
}

.modal-card {
    max-width: 450px;
}

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

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.75rem;
    color: var(--color-text-muted);
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--color-bg-subtle);
    color: var(--color-text);
}

.modal-content h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 20px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.form-group input[type="text"],
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    font-family: var(--font-main);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.form-group input[type="text"]:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group input[type="text"]::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Color picker */
.color-picker {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.color-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
}

.color-btn:hover {
    transform: scale(1.1);
}

.color-btn.active {
    border-color: var(--color-text);
    box-shadow: 0 0 0 2px var(--color-bg), 0 0 0 4px var(--color-text);
}

.color-btn[data-color=""] {
    background: var(--color-bg);
}

.color-btn[data-color="blue"] {
    background: var(--card-blue);
    border-color: var(--card-blue-border);
}

.color-btn[data-color="green"] {
    background: var(--card-green);
    border-color: var(--card-green-border);
}

.color-btn[data-color="yellow"] {
    background: var(--card-yellow);
    border-color: var(--card-yellow-border);
}

.color-btn[data-color="orange"] {
    background: var(--card-orange);
    border-color: var(--card-orange-border);
}

.color-btn[data-color="red"] {
    background: var(--card-red);
    border-color: var(--card-red-border);
}

.color-btn[data-color="purple"] {
    background: var(--card-purple);
    border-color: var(--card-purple-border);
}

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
}

/* Share modal */
.share-info {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
    line-height: 1.6;
}

.share-link-group {
    display: flex;
    gap: 10px;
}

.share-link-group input {
    flex: 1;
    padding: 12px 14px;
    font-family: var(--font-main);
    font-size: 0.85rem;
    color: var(--color-text);
    background: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

/* ========================================
   SAVE INDICATOR & TOAST
   ======================================== */
.save-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    font-size: 0.8rem;
    color: var(--color-success);
    opacity: 0;
    transition: opacity 300ms ease;
}

.save-indicator.visible {
    opacity: 1;
}

.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 12px 24px;
    background: var(--color-text);
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: all 300ms ease;
    z-index: 2000;
}

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

.toast.success {
    background: var(--color-success);
}

.toast.error {
    background: var(--color-danger);
}

/* ========================================
   SEO CONTENT
   ======================================== */
.seo-content {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 64px 0;
}

.seo-section {
    margin-bottom: 56px;
}

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

.seo-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.section-intro {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    margin-bottom: 24px;
    max-width: 800px;
}

.section-intro strong {
    color: var(--color-text);
}

/* SEO Grid */
.seo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.seo-card {
    padding: 24px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: box-shadow var(--transition);
}

.seo-card:hover {
    box-shadow: var(--shadow-md);
}

.seo-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.seo-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.seo-card p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.seo-card p strong {
    color: var(--color-text);
    font-weight: 500;
}

/* Use Cases Grid */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.use-case-card {
    padding: 24px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: box-shadow var(--transition);
}

.use-case-card:hover {
    box-shadow: var(--shadow-md);
}

.use-case-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.use-case-card p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.use-case-card p strong {
    color: var(--color-text);
    font-weight: 500;
}

/* Comparison Grid */
.comparison-content > p {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.comparison-content > p strong {
    color: var(--color-text);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.comparison-item {
    padding: 20px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.comparison-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.comparison-item p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* Export Info */
.export-info {
    padding: 32px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.export-yes {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.big-yes {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-success);
}

.export-yes p {
    font-size: 1rem;
    color: var(--color-text);
}

.export-list {
    list-style: none;
    margin-bottom: 20px;
}

.export-list li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--color-text-muted);
}

.export-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 600;
}

.export-list li strong {
    color: var(--color-text);
}

.export-note {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

/* FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.faq-item summary {
    padding: 18px 24px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background var(--transition);
}

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

.faq-item summary::after {
    content: '+';
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-text-muted);
    transition: transform var(--transition);
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item summary:hover {
    background: var(--color-bg);
}

.faq-item p {
    padding: 0 24px 18px;
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-alt);
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.footer-credit {
    font-size: 0.9rem;
    color: var(--color-text);
    font-weight: 500;
}

.footer-credit a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-credit a:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

.footer-links {
    margin-top: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
}

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition);
}

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

.footer-separator {
    color: var(--color-border-strong);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .header {
        padding: 24px 0 20px;
    }
    
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .toolbar-left,
    .toolbar-right {
        justify-content: center;
    }
    
    .board {
        flex-direction: column;
        align-items: stretch;
    }
    
    .column {
        flex: none;
        min-width: 100%;
        max-height: none;
    }
    
    .btn {
        flex: 1;
        justify-content: center;
        padding: 12px;
    }
    
    .seo-content {
        padding: 40px 0;
    }
    
    .seo-section h2 {
        font-size: 1.25rem;
    }
    
    .modal-content {
        margin: 20px;
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .toolbar-left,
    .toolbar-right {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .share-link-group {
        flex-direction: column;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .header,
    .toolbar,
    .save-indicator,
    .seo-content,
    .footer,
    .modal {
        display: none !important;
    }
    
    body {
        background: white;
    }
    
    .main {
        padding: 0;
    }
    
    .board {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .column {
        flex: 0 0 calc(33.333% - 14px);
        min-width: auto;
        page-break-inside: avoid;
        border: 2px solid #000;
    }
    
    .column-header {
        background: #f0f0f0 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    .card {
        border: 1px solid #ccc;
        box-shadow: none;
    }
    
    @page {
        size: A4 landscape;
        margin: 15mm;
    }
}