:root {
    --bg-base: #0b0c0e;
    --bg-surface: #121417;
    --bg-surface-elevated: #181b20;
    --bg-input: #0f1013;
    --border-hairline: rgba(255, 255, 255, 0.08);
    --border-subtle: rgba(255, 255, 255, 0.14);
    --border-focus: #30a46c;
    --text-primary: #f5f6f8;
    --text-secondary: #8d939e;
    --text-tertiary: #525760;
    --accent-red: #d90429;
    --accent-green: #30a46c;
    --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
    --font-mono: "SF Mono", "JetBrains Mono", Menlo, Monaco, Consolas, monospace;
    --transition-curve: cubic-bezier(0.25, 1, 0.5, 1);
    --transition-speed: 0.32s;
    --max-content-width: 1400px;
}

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

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-display);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.5;
}

#view-transition-shield {
    position: fixed;
    inset: 0;
    background-color: var(--bg-base);
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-speed) var(--transition-curve);
}

#view-transition-shield.active {
    opacity: 1;
    pointer-events: all;
}

.site-nav {
    border-bottom: 1px solid var(--border-hairline);
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(11, 12, 14, 0.85);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.brand-mark {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.brand-mark:hover {
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.nav-link-btn {
    background: none;
    border: none;
    font-family: var(--font-display);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition-speed);
}

.nav-link-btn:hover {
    color: var(--text-primary);
}

.nav-divider {
    color: var(--border-subtle);
    font-size: 0.75rem;
}

.portal-main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem 1.5rem;
    max-width: var(--max-content-width);
    width: 100%;
    margin: 0 auto;
}

.panel-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-hairline);
    padding: 2.5rem;
    width: 100%;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.panel-card-sm {
    max-width: 26rem;
    margin: 0 auto;
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.card-header h2 {
    font-size: 1.15rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.card-header p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-label {
    display: block;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.field-input {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-hairline);
    color: var(--text-primary);
    padding: 0.875rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    outline: none;
    transition: border-color var(--transition-speed);
}

.field-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 1px var(--border-focus);
}

.field-input.text-center {
    text-align: center;
}

.btn-primary {
    width: 100%;
    background-color: var(--text-primary);
    color: var(--bg-base);
    padding: 0.875rem;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    transition: opacity var(--transition-speed);
}

.btn-primary:hover {
    opacity: 0.92;
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-hairline);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition-speed);
}

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

.asset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
}

.asset-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-hairline);
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-speed);
}

.asset-card:hover {
    border-color: var(--border-subtle);
}

.asset-viewport {
    background-color: var(--bg-input);
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-hairline);
    overflow: hidden;
}

.asset-viewport img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.asset-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

.site-footer {
    border-top: 1px solid var(--border-hairline);
    padding: 2rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

/* Structural & State Utility Classes */
.view-container { display: none; width: 100%; }
.view-center { display: none; justify-content: center; align-items: center; width: 100%; }
.feedback-msg { margin-top: 1rem; text-align: center; font-size: 0.75rem; font-family: var(--font-mono); display: none; }
.section-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 2rem; border-bottom: 1px solid var(--border-hairline); padding-bottom: 1.5rem; }
.meta-label { font-size: 0.7rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.15em; color: var(--text-secondary); display: block; margin-bottom: 0.25rem; }
.section-title { font-size: 1.4rem; font-weight: 400; color: var(--text-primary); margin: 0; }
.action-bar { background-color: var(--bg-surface); border: 1px solid var(--border-hairline); padding: 1rem 1.25rem; margin-bottom: 2rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.action-bar p { font-size: 0.75rem; font-family: var(--font-mono); color: var(--text-secondary); margin: 0; }
.btn-auto { width: auto; padding: 0.5rem 1.5rem; font-size: 0.7rem; }
.admin-msg { display: none; font-size: 0.75rem; font-family: var(--font-mono); color: var(--accent-green); background: var(--bg-surface); border: 1px solid rgba(48, 164, 108, 0.35); padding: 0.75rem 1rem; margin-bottom: 2rem; }
.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.panel-title { font-size: 0.85rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 1.25rem; margin-top: 0; }
.select-cursor { cursor: pointer; }
.file-input-pad { font-size: 0.75rem; padding: 0.5rem; }
.archive-section-wrap { margin-top: 3rem; border-top: 1px solid var(--border-hairline); padding-top: 2rem; }
.pad-none { padding: 0; }
.empty-notice { padding: 1.5rem; text-align: center; font-size: 0.75rem; font-family: var(--font-mono); color: var(--text-secondary); }
.danger-notice { color: var(--accent-red); font-family: var(--font-mono); font-size: 0.75rem; padding: 1rem; text-align: center; }
.empty-gallery { grid-column: 1 / -1; font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-secondary); }
.text-white { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.btn-download { padding: 0.25rem 0.6rem; font-size: 0.65rem; text-decoration: none; }

/* Meta Tag */
.meta-tag { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-secondary); background-color: var(--bg-surface-elevated); border: 1px solid var(--border-hairline); padding: 0.35rem 0.75rem; }
.meta-tag.urgent { color: var(--accent-red); border-color: rgba(217, 4, 41, 0.3); }

/* Active Archives List Row */
.archive-row { display: flex; justify-content: space-between; align-items: center; padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border-hairline); }
.archive-row:last-child { border-bottom: none; }
.archive-row-title { font-size: 0.85rem; font-weight: 500; display: block; color: var(--text-primary); margin-bottom: 0.25rem; }
.archive-row-count { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-secondary); font-weight: normal; }
.archive-row-meta { font-size: 0.7rem; font-family: var(--font-mono); color: var(--text-secondary); }
.action-btn-group { display: flex; gap: 1rem; align-items: center; }

/* Text Action Links */
.btn-link { background: none; border: none; font-family: var(--font-mono); font-size: 0.7rem; cursor: pointer; text-transform: uppercase; color: var(--text-primary); text-decoration: none; transition: color var(--transition-speed); padding: 0; }
.btn-link:hover { color: var(--accent-green); }
.btn-link.danger { color: var(--accent-red); }
.btn-link.danger:hover { color: #ff6b6b; }

/* Modals */
.modal-backdrop { display: none; position: fixed; inset: 0; background: rgba(11, 12, 14, 0.88); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); z-index: 500; align-items: center; justify-content: center; padding: 1.5rem; }
.modal-backdrop.active { display: flex; }
.modal-box { max-width: 680px; width: 100%; max-height: 85vh; display: flex; flex-direction: column; overflow: hidden; padding: 2rem; }
.modal-box-sm { max-width: 480px; width: 100%; padding: 2rem; }
.modal-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 1.5rem; border-bottom: 1px solid var(--border-hairline); padding-bottom: 1rem; }
.modal-title { font-size: 1.1rem; font-weight: 400; color: var(--text-primary); margin-top: 0.25rem; }
.modal-body { overflow-y: auto; flex-grow: 1; margin-bottom: 1.5rem; padding-right: 0.5rem; }
.btn-tight { font-size: 0.7rem; padding: 0.3rem 0.8rem; }
.asset-row { display: flex; justify-content: space-between; align-items: center; padding: 0.75rem 0; border-bottom: 1px solid var(--border-hairline); font-family: var(--font-mono); font-size: 0.75rem; }
.asset-info-wrap { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 70%; }
.asset-size { color: var(--text-secondary); font-size: 0.65rem; display: block; margin-top: 0.15rem; }