:root {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --border-color: #30363d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --font-family: 'Inter', -apple-system, sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    min-height: 100vh;
    padding: 32px;
    -webkit-font-smoothing: antialiased;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.header-left {
    text-align: left;
}

.app-header h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.app-header p {
    color: var(--text-secondary);
    font-size: 16px;
}

.header-right {
    display: flex;
    align-items: center;
}

/* Admin Auth Buttons */
.admin-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-family);
    transition: all 0.2s;
}

.admin-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
}

.admin-panel {
    display: flex;
    align-items: center;
    gap: 16px;
}

.admin-badge {
    color: #3fb950;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid #3fb950;
    padding: 4px 8px;
    border-radius: 4px;
}

.twit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.twit-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
}

.twit-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    font-size: 15px;
}

.user-handle {
    color: var(--text-secondary);
    font-size: 13px;
    font-family: "Cascadia Code", Consolas, monospace;
}

.twit-content {
    font-size: 15px;
    line-height: 1.5;
    color: #e6edf3;
    flex-grow: 1;
}

.twit-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
    color: var(--text-secondary);
    font-size: 12px;
    font-family: "Cascadia Code", Consolas, monospace;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.delete-btn {
    background: #da363318;
    color: #ff7b72;
    border: 1px solid #da363346;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: background 0.2s;
}

.delete-btn:hover {
    background: #da363336;
}

/* Media thumbnail */
.twit-media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 6px;
}

.twit-media-link {
    display: block;
    border-radius: 8px;
    overflow: hidden;
    line-height: 0;
}

.twit-media {
    width: 100%;
    max-height: 180px;
    object-fit: cover;
    border-radius: 8px;
    transition: opacity 0.2s;
    cursor: zoom-in;
}

.twit-media:hover {
    opacity: 0.88;
}

.twit-video {
    width: 100%;
    max-height: 240px;
    border-radius: 8px;
    background: #000;
    display: block;
}

/* Pinned card state */
.twit-box.pinned {
    border-color: #d2a53060;
    box-shadow: 0 0 0 1px #d2a53030, 0 4px 16px rgba(210, 165, 48, 0.08);
}

/* Pin badge in card top-right corner */
.pin-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 14px;
    line-height: 1;
    pointer-events: none;
    user-select: none;
}

/* Pin / Unpin button */
.pin-btn {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s;
    font-family: var(--font-family);
}

.pin-btn:hover {
    color: #d2a530;
    border-color: #d2a53060;
    background: rgba(210, 165, 48, 0.08);
}

.pin-btn.active {
    color: #d2a530;
    border-color: #d2a53060;
    background: rgba(210, 165, 48, 0.1);
}

/* Row container for admin action buttons */
.admin-actions {
    display: flex;
    gap: 6px;
    align-items: center;
}


/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 32px;
    border-radius: 12px;
    width: 350px;
    position: relative;
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
}

.modal-content h2 {
    margin-bottom: 24px;
    font-size: 20px;
}

.close-modal {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
}

.close-modal:hover {
    color: var(--text-primary);
}

#loginForm {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

#loginForm input {
    background: #0d1117;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px;
    border-radius: 6px;
    font-family: var(--font-family);
}

#loginForm button {
    background: #58a6ff;
    color: #0d1117;
    border: none;
    padding: 12px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
}

#loginForm button:hover {
    background: #318bf8;
}

/* Loader */
.loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 64px 0;
    color: var(--text-secondary);
    gap: 16px;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(139, 148, 158, 0.2);
    border-top-color: var(--text-secondary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}