@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    /* Refined Minimalist Dark Theme */
    --bg-base: #09090b; /* Zinc 950 */
    --bg-surface: #121214; /* Slightly darker than Zinc 900 for more depth */
    --bg-surface-hover: #1f1f22; 
    
    --text-primary: #ededef; /* Slightly off-white */
    --text-secondary: #a1a1aa; /* Zinc 400 */
    --text-muted: #71717a; /* Zinc 500 */
    
    --border-subtle: #27272a; /* Zinc 800 */
    --border-strong: #3f3f46; /* Zinc 700 */
    
    --accent-primary: #ededef;
    --accent-hover: #ffffff;
    --accent-light: #27272a;
    
    --success-bg: rgba(34, 197, 94, 0.08);
    --success-text: #4ade80;
    --success-border: rgba(34, 197, 94, 0.2);
    
    --danger-bg: rgba(239, 68, 68, 0.08);
    --danger-text: #f87171;
    --danger-border: rgba(239, 68, 68, 0.2);
    
    --warning-bg: rgba(234, 179, 8, 0.08);
    --warning-text: #facc15;
    --warning-border: rgba(234, 179, 8, 0.2);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 12px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -1px rgba(0, 0, 0, 0.4);
    --shadow-inner: inset 0 1px 0 0 rgba(255, 255, 255, 0.05);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.15; letter-spacing: -0.03em; }
a { color: var(--text-primary); text-decoration: none; transition: color 0.15s ease, opacity 0.15s ease; }
a:hover { opacity: 0.8; }

/* Navbar */
.navbar {
    background: rgba(9, 9, 11, 0.8);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1rem 2rem;
    display: flex; justify-content: space-between; align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: 0.75rem; }
.brand-icon { font-size: 1.5rem; }
.brand-text h1 { font-size: 1.125rem; margin: 0; font-weight: 700; letter-spacing: -0.04em; }
.brand-text p { font-size: 0.75rem; color: var(--text-secondary); margin: 0; letter-spacing: 0.01em; }
.nav-actions { display: flex; gap: 0.75rem; }
.mobile-menu-toggle { display: none; }

/* Containers */
.main-container { max-width: 1000px; margin: 0 auto; padding: 2.5rem 1.5rem; }
.container { max-width: 1000px; margin: 0 auto; padding: 2.5rem 1.5rem; } 
.container-sm { max-width: 500px; margin: 0 auto; padding: 2.5rem 1.5rem; }

/* Grid Layouts */
.hero-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; margin-bottom: 2rem; }
@media(min-width: 768px){ .hero-grid { grid-template-columns: 1fr 1fr; } }
.features-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.form-grid { display: flex; flex-direction: column; gap: 1rem; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1.5rem; }

/* Cards */
.card {
    background: var(--bg-surface); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg); box-shadow: var(--shadow-sm), var(--shadow-inner); overflow: hidden;
}
.card-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border-subtle); display:flex; align-items:center; justify-content:space-between; }
.card-header h2 { font-size: 1.125rem; font-weight: 600; }
.card-body { padding: 1.5rem; }
.card-title-group h2 { display: flex; align-items: center; gap: 0.75rem; margin-bottom:0.25rem;}
.card-title-group p { font-size: 0.875rem; color: var(--text-secondary); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0.625rem 1rem; font-size: 0.875rem; font-weight: 500;
    border-radius: var(--radius-md); border: 1px solid transparent; cursor: pointer;
    transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1); gap: 0.5rem; font-family: inherit; outline: none;
}
.btn:active { transform: scale(0.97); }
.btn:focus-visible { outline: 2px solid var(--text-primary); outline-offset: 2px; }
.btn-primary { 
    background: var(--accent-primary); 
    color: var(--bg-base); 
    font-weight: 600;
    box-shadow: inset 0 -1px 0 rgba(0,0,0,0.2), 0 1px 2px rgba(0,0,0,0.1);
}
.btn-primary:hover { 
    background: var(--accent-hover); 
    box-shadow: inset 0 -1px 0 rgba(0,0,0,0.2), 0 2px 4px rgba(255,255,255,0.05);
}
.btn-secondary { 
    background: var(--bg-surface-hover); 
    color: var(--text-primary); 
    border-color: var(--border-subtle); 
    box-shadow: var(--shadow-inner), 0 1px 2px rgba(0,0,0,0.2);
}
.btn-secondary:hover { 
    background: var(--border-strong); 
    border-color: var(--border-strong);
}
.btn-pdf { background: var(--danger-bg); color: var(--danger-text); border: 1px solid var(--danger-border); }
.btn-pdf:hover { background: rgba(239, 68, 68, 0.2); }
.btn-copy { background: var(--bg-surface-hover); border: 1px solid var(--border-subtle); padding: 0.5rem 0.75rem; border-radius: var(--radius-sm); cursor:pointer; font-size:0.75rem; font-weight:600; color: var(--text-primary); }
.btn-copy:hover { background: var(--border-strong); }
.btn-group { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 1.5rem; }
.btn-action-group { display: flex; gap: 0.5rem; }
.btn-block { width: 100%; }
.btn-submit { background: var(--accent-primary); color: var(--bg-base); padding: 0.75rem 1.5rem; border-radius: var(--radius-md); border: none; font-weight: 600; cursor: pointer; transition: 0.2s; }
.btn-submit:hover { background: var(--accent-hover); }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.875rem; font-weight: 500; color: var(--text-primary); margin-bottom: 0.5rem; }
.form-control { 
    width: 100%; padding: 0.625rem 0.75rem; font-size: 0.875rem; 
    border: 1px solid var(--border-strong); border-radius: var(--radius-md); 
    background: rgba(0,0,0,0.2); color: var(--text-primary); 
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1); 
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.5);
}
.form-control:focus { 
    outline: none; border-color: var(--text-primary); 
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1), inset 0 1px 2px rgba(0,0,0,0.5); 
}
.form-control::placeholder { color: var(--text-muted); }

/* Badges */
.badge { padding: 0.25rem 0.625rem; font-size: 0.75rem; font-weight: 600; border-radius: 9999px; }
.badge-live { background: var(--success-bg); color: var(--success-text); border: 1px solid var(--success-border); }
.badge-idle { background: var(--warning-bg); color: var(--warning-text); border: 1px solid var(--warning-border); }
.status-badge { font-size: 0.75rem; padding: 0.25rem 0.5rem; border-radius: var(--radius-sm); }
.course-count-badge { background: var(--bg-surface-hover); color: var(--text-secondary); padding: 2px 8px; border-radius: 99px; font-size: 0.75rem; border: 1px solid var(--border-subtle); }

/* Stats Strip */
.stats-strip { display: flex; gap: 1rem; padding: 1.25rem; background: var(--bg-surface-hover); border-radius: var(--radius-md); margin-bottom: 1.5rem; border: 1px solid var(--border-subtle); }
.stat-box { flex: 1; text-align: center; }
.stat-value { font-size: 1.75rem; font-weight: 700; line-height: 1; margin-bottom: 0.25rem; font-variant-numeric: tabular-nums; color: var(--text-primary); }
.stat-label { font-size: 0.75rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; font-weight:600;}

.stat-card { background: var(--bg-surface); padding: 1.5rem; border-radius: var(--radius-lg); border: 1px solid var(--border-subtle); display: flex; align-items: center; gap: 1rem; box-shadow: var(--shadow-sm), var(--shadow-inner); }
.stat-icon { font-size: 2rem; }
.stat-number { font-size: 1.75rem; font-weight: 700; line-height: 1; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }

/* Sync Box */
.sync-box { margin-top: 1.5rem; padding: 1.25rem; background: var(--bg-surface-hover); border-radius: var(--radius-md); border: 1px solid var(--border-subtle); }
.sync-status-row { display: flex; flex-direction: column; gap: 0.25rem; margin-bottom: 0.75rem; }
.feed-url-input-group { display: flex; gap: 0.5rem; }
.feed-url-input { flex: 1; padding: 0.625rem; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); background: var(--bg-base); color: var(--text-primary); font-family: monospace; font-size: 0.875rem; }

/* Alerts */
.alert-banner { padding: 1rem; border-radius: var(--radius-md); margin-bottom: 1.5rem; display: flex; align-items: center; gap: 0.75rem; font-size: 0.875rem; font-weight:500;}
.alert-error { background: var(--danger-bg); color: var(--danger-text); border: 1px solid var(--danger-border); }

/* Features & Upload Zone */
.feature-card { padding: 1.5rem; border: 1px solid var(--border-subtle); border-radius: var(--radius-lg); background: var(--bg-surface); box-shadow: var(--shadow-sm), var(--shadow-inner); transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1); display: flex; flex-direction: column; justify-content: space-between; gap: 1rem; }
.feature-card:hover { transform: translateY(-2px); border-color: var(--border-strong); box-shadow: var(--shadow-md), var(--shadow-inner); }
.feature-icon { font-size: 1.5rem; margin-bottom: 0.75rem; }
.feature-title { font-weight: 600; margin-bottom: 0.5rem; font-size: 1rem; }
.feature-desc { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.5; }

.upload-dropzone { border: 2px dashed var(--border-strong); padding: 4rem 2rem; text-align: center; border-radius: var(--radius-lg); background: var(--bg-surface); cursor: pointer; transition: all 0.2s ease; }
.upload-dropzone:hover { border-color: var(--text-primary); background: var(--bg-surface-hover); }
.upload-icon { font-size: 2.5rem; color: var(--text-muted); margin-bottom: 1rem; }
.dropzone-title { font-weight: 600; margin-bottom: 0.5rem; color: var(--text-primary); }
.dropzone-hint { font-size: 0.875rem; color: var(--text-secondary); }

.url-divider { text-align: center; margin: 2rem 0; position: relative; color: var(--text-muted); font-size: 0.875rem; font-weight: 500; }
.url-divider::before { content: ""; position: absolute; left: 0; top: 50%; width: 45%; height: 1px; background: var(--border-subtle); }
.url-divider::after { content: ""; position: absolute; right: 0; top: 50%; width: 45%; height: 1px; background: var(--border-subtle); }

/* Courses Grid */
.course-grid { display: grid; gap: 1rem; margin-top: 1rem; }
.course-card { border: 1px solid var(--border-subtle); border-radius: var(--radius-md); overflow: hidden; background: var(--bg-surface); transition: border-color 0.2s; }
.course-card.has-selection { border-color: var(--text-muted); }
.course-header { padding: 1rem; background: var(--bg-surface); cursor: pointer; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid transparent; transition: background 0.2s; }
.course-header:hover { background: var(--bg-surface-hover); }
.course-card.open .course-header { border-bottom-color: var(--border-subtle); }
.course-title-block { display: flex; align-items: center; gap: 0.75rem; }
.course-code-tag { background: var(--bg-surface-hover); border: 1px solid var(--border-strong); color: var(--text-primary); padding: 0.25rem 0.5rem; border-radius: var(--radius-sm); font-size: 0.75rem; font-weight: 600; font-family: monospace; }
.course-name-text { font-weight: 500; font-size: 0.95rem; }
.course-body { padding: 1rem; display: none; background: var(--bg-base); }
.course-card.open .course-body { display: block; }

.groupe-item { display: flex; align-items: center; gap: 1rem; padding: 0.75rem; border: 1px solid var(--border-subtle); border-radius: var(--radius-sm); margin-bottom: 0.5rem; background: var(--bg-surface); transition: all 0.2s ease; cursor: pointer; }
.groupe-item:last-child { margin-bottom: 0; }
.groupe-item:hover { border-color: var(--border-strong); }
.groupe-item.selected { background: rgba(255, 255, 255, 0.05); border-color: var(--text-muted); }
.groupe-item input[type="checkbox"] { accent-color: var(--text-primary); width: 1.1rem; height: 1.1rem; }

/* Selection elements */
.filter-pills { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.pill-label { padding: 0.375rem 0.75rem; border: 1px solid var(--border-strong); border-radius: 99px; font-size: 0.75rem; font-weight: 500; cursor: pointer; transition: all 0.2s; background: var(--bg-surface); color: var(--text-secondary); user-select: none; }
.pill-label:hover { background: var(--bg-surface-hover); color: var(--text-primary); }
input[type="checkbox"].pill-checkbox { display: none; }
input[type="checkbox"].pill-checkbox:checked + .pill-label { background: var(--text-primary); color: var(--bg-base); border-color: var(--text-primary); }

.toggle-switch-container { display: flex; align-items: center; justify-content: space-between; background: var(--bg-surface-hover); padding: 1rem; border-radius: var(--radius-md); border: 1px solid var(--border-subtle); margin-top: 1.5rem; }
.switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--border-strong); transition: .3s; border-radius: 24px; }
.slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: var(--text-primary); transition: .3s; border-radius: 50%; }
input:checked + .slider { background-color: var(--success-text); }
input:checked + .slider:before { transform: translateX(20px); background-color: var(--bg-base); }

/* List Group */
.list-group { display: flex; flex-direction: column; }
.list-group-item { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border-subtle); color: var(--text-primary); transition: background 0.2s; }
.list-group-item:last-child { border-bottom: none; }
.list-group-item:hover { background: var(--bg-surface-hover); }

/* Footers */
.sticky-footer { position: fixed; bottom: 0; left: 0; right: 0; background: rgba(9, 9, 11, 0.9); backdrop-filter: blur(10px); border-top: 1px solid var(--border-subtle); padding: 1rem 2rem; box-shadow: 0 -4px 10px rgba(0,0,0,0.5); z-index: 100; }
.footer-inner { max-width: 1000px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }

/* Additional components for select_courses.html */
.page-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 2rem; }
.page-title h2 { font-size: 1.5rem; margin-bottom: 0.25rem; font-weight: 700; letter-spacing: -0.02em; }
.page-title p { color: var(--text-secondary); font-size: 0.875rem; }
.filename-badge { background: var(--bg-surface-hover); border: 1px solid var(--border-subtle); padding: 0.5rem 1rem; border-radius: 9999px; font-size: 0.75rem; font-family: monospace; color: var(--text-primary); }

.controls-card { background: var(--bg-surface); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg); padding: 1.25rem; margin-bottom: 1.5rem; }
.toolbar-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.btn-tool { background: var(--bg-surface-hover); border: 1px solid var(--border-strong); padding: 0.375rem 0.75rem; border-radius: var(--radius-sm); font-size: 0.75rem; font-weight: 500; cursor: pointer; transition: 0.15s; color: var(--text-primary); }
.btn-tool:hover { background: var(--border-subtle); border-color: var(--text-muted); }
.selection-indicator { font-size: 0.875rem; font-weight: 500; color: var(--text-secondary); }
.indicator-num { background: var(--text-primary); color: var(--bg-base); padding: 0.125rem 0.5rem; border-radius: 9999px; margin-left: 0.25rem; font-weight: 600; }

.filter-row { display: flex; align-items: center; gap: 1rem; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border-subtle); }
.filter-section-title { font-size: 0.7rem; font-weight: 600; text-transform: uppercase; color: var(--text-secondary); letter-spacing: 0.05em; }


/* Additional components for upload.html */
.back-link { display: inline-flex; align-items: center; color: var(--text-secondary); font-size: 0.875rem; font-weight: 500; margin-bottom: 1.5rem; }
.back-link:hover { color: var(--text-primary); }
.tabs { display: flex; border-bottom: 1px solid var(--border-subtle); margin-bottom: 1.5rem; gap: 1rem; }
.tab-btn { background: none; border: none; padding: 0.75rem 0; font-size: 0.875rem; font-weight: 500; color: var(--text-secondary); cursor: pointer; border-bottom: 2px solid transparent; transition: 0.2s; outline: none; }
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active { color: var(--text-primary); border-bottom-color: var(--text-primary); font-weight: 600; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Calendar.html & Modal Overrides */
.calendar-card { background: var(--bg-surface); padding: 1.5rem; border-radius: var(--radius-lg); border: 1px solid var(--border-subtle); box-shadow: var(--shadow-md); margin-top: 1.5rem; }
.fc-theme-standard th, .fc-theme-standard td, .fc-theme-standard .fc-scrollgrid { border-color: var(--border-subtle) !important; }
.fc .fc-button-primary { background-color: var(--bg-surface-hover) !important; border-color: var(--border-strong) !important; color: var(--text-primary) !important; }
.fc .fc-button-primary:not(:disabled):active, .fc .fc-button-primary:not(:disabled).fc-button-active { background-color: var(--text-primary) !important; color: var(--bg-base) !important; border-color: var(--text-primary) !important; }
.fc .fc-col-header-cell-cushion { color: var(--text-primary); font-weight: 500; }
.fc .fc-daygrid-day-number { color: var(--text-secondary); }
.fc-day-today { background-color: var(--bg-surface-hover) !important; }
.fc .fc-toolbar-title { color: var(--text-primary); font-weight: 600; }
.fc-h-event { border: none !important; border-radius: 4px; box-shadow: 0 1px 2px rgba(0,0,0,0.5); font-weight: 500; }

.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); display: none; justify-content: center; align-items: center; z-index: 2000; }
.modal-card { background: var(--bg-surface); padding: 1.5rem; border-radius: var(--radius-lg); width: 100%; max-width: 400px; border: 1px solid var(--border-subtle); box-shadow: 0 20px 40px rgba(0,0,0,0.8), var(--shadow-inner); transform: translateY(0); transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1); }
.modal-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1rem; border-bottom: 1px solid var(--border-subtle); padding-bottom: 1rem; }
.modal-title { font-size: 1.125rem; font-weight: 600; color: var(--text-primary); }
.modal-close { background: none; border: none; color: var(--text-secondary); font-size: 1.5rem; cursor: pointer; transition: 0.2s; }
.modal-close:hover { color: var(--text-primary); }
.modal-detail-row { display: flex; gap: 0.75rem; margin-bottom: 0.75rem; font-size: 0.875rem; color: var(--text-secondary); }
.modal-detail-icon { font-size: 1rem; }
.modal-detail-content { flex: 1; }

.toast { position: fixed; bottom: 20px; right: 20px; background: var(--text-primary); color: var(--bg-base); padding: 0.75rem 1.25rem; border-radius: var(--radius-md); box-shadow: 0 4px 12px rgba(0,0,0,0.5); font-size: 0.875rem; font-weight: 500; display: none; z-index: 3000; animation: fadein 0.3s, fadeout 0.3s 2.7s; }
@keyframes fadein { from { bottom: 0; opacity: 0; } to { bottom: 20px; opacity: 1; } }
@keyframes fadeout { from { bottom: 20px; opacity: 1; } to { bottom: 0; opacity: 0; } }

footer { text-align: center; padding: 2rem; color: var(--text-muted); font-size: 0.75rem; border-top: 1px solid var(--border-subtle); margin-top: 4rem; }

/* Filter Buttons (gf-btn) */
.gf-btn { background: var(--bg-surface-hover); color: var(--text-secondary); border: 1px solid var(--border-strong); padding: 0.375rem 0.75rem; border-radius: var(--radius-sm); font-size: 0.75rem; font-weight: 600; cursor: pointer; transition: all 0.2s; outline: none; }
.gf-btn:hover { background: var(--border-subtle); color: var(--text-primary); }
.gf-btn.active { background: var(--text-primary); color: var(--bg-base); border-color: var(--text-primary); }
.gf-btn.special { border-radius: 9999px; }

.gf-preset-btn { background: var(--accent-light); color: var(--accent-primary); border: 1px solid var(--border-subtle); padding: 0.375rem 0.75rem; border-radius: 9999px; font-size: 0.75rem; font-weight: 600; cursor: pointer; transition: all 0.2s; outline: none; margin-left: auto; }
.gf-preset-btn:hover { background: var(--border-strong); color: var(--accent-hover); }

/* Search Box */
.search-box { position: relative; margin-bottom: 1.5rem; }
.search-icon { position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 1rem; }
.search-box input { width: 100%; padding: 1rem 1rem 1rem 3rem; background: var(--bg-surface); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); color: var(--text-primary); font-size: 0.95rem; outline: none; transition: 0.2s; box-shadow: var(--shadow-sm); }
.search-box input:focus { border-color: var(--text-muted); box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.05); }

/* Toggle Switch */
.toggle-switch { position: relative; display: inline-block; width: 44px; height: 24px; cursor: pointer; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--border-strong); transition: .3s; border-radius: 24px; }
.toggle-slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: var(--text-primary); transition: .3s; border-radius: 50%; }
.toggle-switch input:checked + .toggle-slider { background-color: var(--success-text); }
.toggle-switch input:checked + .toggle-slider:before { transform: translateX(20px); background-color: var(--bg-base); }

/* Footer Buttons */
.btn-back { color: var(--text-secondary); font-size: 0.875rem; font-weight: 500; cursor: pointer; transition: 0.2s; display: inline-flex; align-items: center; }
.btn-back:hover { color: var(--text-primary); }
.btn-publish { background: var(--text-primary); color: var(--bg-base); border: none; padding: 0.75rem 1.5rem; border-radius: var(--radius-md); font-weight: 600; cursor: pointer; transition: 0.2s; font-size: 0.875rem; display: inline-flex; align-items: center; gap: 0.5rem; box-shadow: 0 0 15px rgba(255, 255, 255, 0.1); }
.btn-publish:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 0 20px rgba(255, 255, 255, 0.2); }
.btn-publish:disabled { background: var(--border-strong); color: var(--text-muted); cursor: not-allowed; transform: none; box-shadow: none; }

.hidden { display: none !important; }
.empty-search-msg { text-align: center; padding: 3rem; color: var(--text-muted); font-size: 0.875rem; display: none; }
.summary-stats { font-size: 0.875rem; color: var(--text-secondary); display: flex; align-items: center; gap: 0.5rem; }
.summary-stats strong { color: var(--text-primary); font-size: 1rem; }

/* Utilities */
.text-muted { color: var(--text-muted) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.mb-4 { margin-bottom: 1.5rem !important; }

/* --- Mobile Optimizations --- */
@media (max-width: 768px) {
    .navbar {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        padding: 1rem;
    }
    .mobile-menu-toggle {
        display: block;
        background: none;
        border: none;
        color: var(--text-primary);
        font-size: 1.5rem;
        cursor: pointer;
        padding: 0.25rem 0.5rem;
    }
    .nav-actions {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0.5rem;
        margin-top: 1rem;
    }
    .nav-actions.active {
        display: flex;
    }
    .nav-actions > * {
        width: 100%;
        text-align: center;
        justify-content: center;
    }
    .features-grid, .stats-grid, .btn-group {
        grid-template-columns: 1fr;
    }
    .stats-strip {
        flex-direction: column;
        gap: 1rem;
    }
    .feed-url-input-group {
        flex-direction: column;
        width: 100%;
    }
    .feed-url-input-group > * {
        width: 100%;
        text-align: center;
        justify-content: center;
    }
    .page-header {
        flex-direction: column;
        gap: 1rem;
    }
    .footer-inner {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .toolbar-row {
        flex-direction: column;
        align-items: stretch;
    }
    .btn-action-group {
        flex-wrap: wrap;
    }
    .filter-row {
        flex-wrap: wrap;
    }
    .brand {
        width: 100%;
    }
    /* Increase touch targets for mobile */
    .btn {
        padding: 0.875rem 1rem;
        font-size: 1rem;
    }
    .form-control {
        padding: 0.875rem 1rem;
        font-size: 1rem;
    }
    .list-group-item {
        padding: 1.25rem 1rem;
    }
    .pill-label {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    .gf-btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    /* FullCalendar overrides */
    .fc .fc-toolbar {
        flex-direction: column;
        gap: 0.5rem;
    }
    .fc .fc-toolbar-title {
        font-size: 1.25rem !important;
    }
    .fc .fc-button {
        padding: 0.5rem 0.75rem !important;
    }
    
    .calendar-card {
        padding: 0.75rem;
        border-radius: 0;
        margin-left: -1.5rem;
        margin-right: -1.5rem;
        border-left: none;
        border-right: none;
    }
}