/* Modern RSS Feed Styling */
:root {
    /* Color Palette - Modern Indigo/Slate Theme */
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #e0e7ff;

    --background: #f8fafc;
    --surface: #ffffff;
    --surface-hover: #f1f5f9;

    --text-main: #0f172a;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;

    --border: #e2e8f0;
    --border-hover: #cbd5e1;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    --radius: 0.75rem;
    --radius-sm: 0.5rem;

    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: #0f172a;
        --surface: #1e293b;
        --surface-hover: #334155;

        --text-main: #f8fafc;
        --text-secondary: #94a3b8;
        --text-tertiary: #64748b;

        --border: #334155;
        --border-hover: #475569;

        --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
        --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3);
    }
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header Styling */
header {
    margin-bottom: 3rem;
    animation: fadeIn 0.8s ease-out;
}

.header-content {
    background: var(--surface);
    padding: 2.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--text-main) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.75rem;
    font-weight: 800;
    letter-spacing: -0.025em;
}

p.desc {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* Controls Section */
.controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .controls {
        flex-direction: row;
        align-items: stretch;
    }
}

/* RSS URL Box */
.rss-box {
    flex: 1;
    background: var(--background);
    border: 1px solid var(--border);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: border-color 0.2s;
}

.rss-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.rss-icon {
    color: #ea580c;
    /* standard RSS orange */
    display: flex;
    align-items: center;
    padding-left: 0.5rem;
}

.rss-link {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.copy-btn {
    background: var(--surface);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: calc(var(--radius-sm) - 2px);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.copy-btn:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
}

.copy-btn.copied {
    background: #10b981;
    border-color: #10b981;
    color: white;
}

/* Search Box */
.search-box {
    flex: 1;
    position: relative;
}

.search-box input {
    width: 100%;
    height: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--background);
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
    background: var(--surface);
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

/* Main Grid Layout */
main {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    padding-bottom: 3rem;
}

/* Card Styling */
.item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    opacity: 0;
    display: flex;
    flex-direction: column;
}

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

.item-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.item h2 {
    font-size: 1.25rem;
    line-height: 1.4;
    margin-bottom: 1rem;
    font-weight: 700;
}

.item h2 a {
    color: var(--text-main);
    text-decoration: none;
    background-image: linear-gradient(var(--text-main), var(--text-main));
    background-size: 0% 1px;
    background-position: left bottom;
    background-repeat: no-repeat;
    transition: background-size 0.3s;
}

.item h2 a:hover {
    background-size: 100% 1px;
}

.desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.desc img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin-bottom: 1em;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: auto;
}

.read-more:hover {
    text-decoration: underline;
}

.read-more svg {
    transition: transform 0.2s;
}

.read-more:hover svg {
    transform: translateX(4px);
}

/* Footer */
footer {
    text-align: center;
    padding-top: 2rem;
    padding-bottom: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

.fade-in-up {
    animation: fadeInUp 0.5s ease-out forwards;
}