:root {
    /* Natural/Softer Dark Theme */
    --bg-color: #25282c; /* Softer charcoal */
    --card-bg: #30343a;  /* Lighter gray-blueish */
    --text-primary: #f3f4f6; /* Off-white */
    --text-secondary: #9ca3af; /* Soft gray */
    --accent-color: #5ea87e; /* Natural Sage Green */
    --accent-hover: #4b8a65;
    --border-color: #3f444c;
    --input-bg: #3f444c;
    --error-color: #f87171;

    --font-family: 'Outfit', sans-serif;
    --transition-speed: 0.2s;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem;
}

.app-container {
    width: 100%;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

header h1 {
    font-weight: 600;
    letter-spacing: -0.02em;
    font-size: 2rem;
    text-align: center;
    color: var(--text-primary);
}

.input-group {
    position: relative;
    display: flex;
    gap: 0.5rem;
    background: var(--card-bg);
    padding: 0.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: border-color var(--transition-speed);
}

.input-group:focus-within {
    border-color: var(--accent-color);
}

input[type="url"] {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    outline: none;
}

input[type="url"]::placeholder {
    color: var(--text-secondary);
}

button#fetch-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 0.75rem;
    width: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color var(--transition-speed), transform 0.1s;
}

button#fetch-btn:hover {
    background-color: var(--accent-hover);
}

button#fetch-btn:active {
    transform: scale(0.95);
}

#error-message {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
    padding: 0.75rem;
    border-radius: 0.5rem;
    text-align: center;
    font-size: 0.9rem;
    margin-top: -1.5rem; /* pull up closer to input */
}

.hidden {
    display: none;
}

.feed-grid {
    display: grid;
    gap: 1.5rem;
    margin-top: 3rem;
}

.feed-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: transform var(--transition-speed), border-color var(--transition-speed);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
}

.feed-item:hover {
    transform: translateY(-2px);
    border-color: var(--text-secondary);
}

.item-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.item-title {
    font-size: 1.25rem;
    font-weight: 500;
    line-height: 1.4;
}

.item-snippet {
    font-size: 0.95rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.feed-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    display: none; /* Hidden by default, script can toggle if image exists */
}

/* Pagination */
#pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

#pagination.hidden {
    display: none;
}

.page-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition-speed);
}

.page-btn:hover:not(:disabled) {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    border-color: transparent;
}

#page-info {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Scrollbar tweaks */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

@media (max-width: 600px) {
    .app-container {
        padding: 0;
        width: 100%;
    }
    body {
        padding: 1rem;
    }
    header h1 {
        font-size: 1.5rem;
    }
}