/* WulfVault Modern UI — WeTransfer-inspired clean layout */

:root {
    --wv-bg: #f8fafc;
    --wv-surface: #ffffff;
    --wv-text: #0f172a;
    --wv-text-muted: #64748b;
    --wv-border: #e2e8f0;
    --wv-radius: 16px;
    --wv-radius-sm: 10px;
    --wv-shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);
    --wv-shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
}

body.wv-app,
body.wv-public {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--wv-bg);
    color: var(--wv-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ── Top navigation ── */
.header {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--wv-border);
    box-shadow: none;
    padding: 14px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .logo h1 {
    color: var(--wv-text);
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.header .logo img {
    max-height: 40px;
    max-width: 160px;
}

.header nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.header nav a,
.header nav .dropdown-toggle {
    color: var(--wv-text-muted);
    background: transparent;
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background 0.15s, color 0.15s;
}

.header nav a:hover,
.header nav .dropdown-toggle:hover {
    background: #f1f5f9;
    color: var(--wv-text);
}

.header nav span {
    color: #94a3b8;
    font-size: 0.7rem;
    margin-left: 8px;
}

.header nav .dropdown-content {
    border: 1px solid var(--wv-border);
    border-radius: var(--wv-radius-sm);
    box-shadow: var(--wv-shadow-lg);
    padding: 6px;
}

.header nav .dropdown-content a {
    border-radius: 8px !important;
    color: var(--wv-text) !important;
}

.header nav .dropdown {
    position: relative;
    display: inline-block;
}

.header nav .dropdown-toggle {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
}

.header nav .dropdown-toggle::after {
    content: '▾';
    font-size: 11px;
}

.header nav .dropdown-content {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 200px;
    background: white;
    z-index: 1000;
}

.header nav .dropdown-content a {
    display: block;
    padding: 10px 14px;
    white-space: nowrap;
}

.header nav .dropdown-content a:hover {
    background: #f1f5f9 !important;
}

.header nav .dropdown:hover .dropdown-content {
    display: block;
}

.header .hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
    z-index: 1001;
}

.header .hamburger span {
    width: 22px;
    height: 2px;
    background: var(--wv-text);
    margin: 4px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.header .hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-4px, 5px);
}

.header .hamburger.active span:nth-child(2) {
    opacity: 0;
}

.header .hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-4px, -5px);
}

.mobile-nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    z-index: 999;
}

.mobile-nav-overlay.active {
    display: block;
}

.header .hamburger span {
    background: var(--wv-text);
}

@media screen and (max-width: 768px) {
    .header {
        padding: 12px 16px !important;
    }
    .header .hamburger {
        display: flex !important;
    }
    .header nav {
        display: none !important;
        position: fixed !important;
        top: 0 !important;
        right: -100% !important;
        width: min(300px, 85vw) !important;
        height: 100vh !important;
        flex-direction: column !important;
        align-items: stretch !important;
        padding: 72px 20px 24px !important;
        gap: 4px !important;
        transition: right 0.25s ease !important;
        z-index: 1000 !important;
        overflow-y: auto !important;
    }
    .header nav.active {
        display: flex !important;
        right: 0 !important;
        background: var(--wv-surface) !important;
        border-left: 1px solid var(--wv-border);
        box-shadow: var(--wv-shadow-lg);
    }
    .header nav.active a,
    .header nav.active .dropdown-toggle {
        color: var(--wv-text) !important;
        width: 100%;
        border-radius: 8px !important;
    }
    .header nav .dropdown {
        width: 100%;
    }
    .header nav .dropdown-content {
        position: static !important;
        display: block !important;
        box-shadow: none !important;
        border: none !important;
        padding: 0 0 0 12px !important;
        margin-top: 4px;
    }
    .header nav .dropdown-content a {
        color: var(--wv-text-muted) !important;
        font-size: 0.875rem !important;
    }
}

/* ── Public pages (/send, login, splash) ── */
.wv-public {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.wv-public-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 20px 48px;
}

.wv-shell {
    width: 100%;
    max-width: 560px;
}

.wv-shell-wide {
    max-width: 680px;
}

.wv-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 32px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.wv-brand {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--wv-text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.wv-brand img {
    max-height: 36px;
    vertical-align: middle;
}

.wv-topbar-link {
    color: var(--wv-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid var(--wv-border);
    transition: all 0.15s;
}

.wv-topbar-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.wv-card {
    background: var(--wv-surface);
    border-radius: var(--wv-radius);
    box-shadow: var(--wv-shadow);
    border: 1px solid var(--wv-border);
    padding: 40px;
}

.wv-card h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
    color: var(--wv-text);
}

.wv-subtitle {
    color: var(--wv-text-muted);
    font-size: 0.95rem;
    margin-bottom: 28px;
    line-height: 1.6;
}

.wv-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--wv-text);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.wv-input,
.wv-textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--wv-border);
    border-radius: var(--wv-radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    background: #fff;
    transition: border-color 0.15s, box-shadow 0.15s;
    margin-bottom: 18px;
}

.wv-textarea {
    min-height: 88px;
    resize: vertical;
}

.wv-input:focus,
.wv-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.wv-help {
    font-size: 0.8rem;
    color: var(--wv-text-muted);
    margin: -10px 0 18px;
}

.wv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 14px 24px;
    border: none;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: transform 0.12s, box-shadow 0.12s, opacity 0.12s;
}

.wv-btn-primary {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.wv-btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

.wv-btn-primary:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.wv-btn-secondary {
    background: #f1f5f9;
    color: var(--wv-text);
    margin-top: 10px;
}

.wv-dropzone {
    border: 2px dashed #cbd5e1;
    border-radius: var(--wv-radius);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    margin-bottom: 24px;
    background: #fafbfc;
}

.wv-dropzone:hover,
.wv-dropzone.dragover {
    border-color: var(--primary-color);
    background: #eff6ff;
}

.wv-dropzone strong {
    display: block;
    font-size: 1.05rem;
    margin-bottom: 6px;
    color: var(--wv-text);
}

.wv-dropzone span {
    color: var(--wv-text-muted);
    font-size: 0.9rem;
}

.wv-file-name {
    margin-top: 12px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

.wv-result {
    display: none;
    margin-top: 24px;
    padding: 20px;
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    border-radius: var(--wv-radius-sm);
    color: #065f46;
}

.wv-result input {
    width: 100%;
    margin-top: 12px;
    padding: 10px 12px;
    border: 1px solid #a7f3d0;
    border-radius: 8px;
    font-family: ui-monospace, monospace;
    font-size: 0.8rem;
}

.wv-progress {
    display: none;
    margin: 16px 0;
}

.wv-progress-bar {
    height: 6px;
    background: #e2e8f0;
    border-radius: 999px;
    overflow: hidden;
}

.wv-progress-fill {
    height: 100%;
    width: 0%;
    background: var(--primary-color);
    border-radius: 999px;
    transition: width 0.2s;
}

.wv-progress-text {
    text-align: center;
    font-size: 0.85rem;
    color: var(--wv-text-muted);
    margin-top: 8px;
}

/* Login / auth */
.wv-auth-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: radial-gradient(ellipse at top, #eff6ff 0%, var(--wv-bg) 55%);
}

.wv-auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--wv-surface);
    border-radius: var(--wv-radius);
    box-shadow: var(--wv-shadow-lg);
    border: 1px solid var(--wv-border);
    padding: 40px;
}

.wv-auth-logo {
    text-align: center;
    margin-bottom: 28px;
}

.wv-auth-logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--wv-text);
    letter-spacing: -0.02em;
}

.wv-auth-logo p {
    color: var(--wv-text-muted);
    font-size: 0.9rem;
    margin-top: 4px;
}

.wv-auth-logo img {
    max-width: 180px;
    max-height: 64px;
    margin-bottom: 12px;
}

.wv-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    padding: 12px 14px;
    border-radius: var(--wv-radius-sm);
    margin-bottom: 18px;
    font-size: 0.875rem;
}

.wv-info {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    color: #1e40af;
    padding: 12px 14px;
    border-radius: var(--wv-radius-sm);
    margin-bottom: 18px;
    font-size: 0.875rem;
}

.wv-form-group {
    margin-bottom: 18px;
}

.wv-form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--wv-text);
}

.wv-form-group input[type="text"],
.wv-form-group input[type="email"],
.wv-form-group input[type="password"] {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--wv-border);
    border-radius: var(--wv-radius-sm);
    font-size: 0.95rem;
}

.wv-form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.wv-footer-note {
    text-align: center;
    margin-top: 20px;
    color: #94a3b8;
    font-size: 0.75rem;
}

/* Splash / download page */
.wv-splash-icon {
    font-size: 3.5rem;
    margin-bottom: 16px;
}

.wv-splash-card {
    text-align: center;
    max-width: 560px;
    margin: 0 auto;
}

.wv-splash-card h2 {
    font-size: 1.35rem;
    font-weight: 700;
    word-break: break-word;
    margin-bottom: 8px;
}

.wv-meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
    margin: 24px 0;
    text-align: left;
}

.wv-meta-item {
    background: #f8fafc;
    border: 1px solid var(--wv-border);
    border-radius: var(--wv-radius-sm);
    padding: 14px;
}

.wv-meta-item h3 {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--wv-text-muted);
    margin-bottom: 4px;
}

.wv-meta-item p {
    font-weight: 600;
    font-size: 0.95rem;
}

.wv-download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    background: var(--primary-color);
    color: #fff !important;
    text-decoration: none;
    border-radius: 999px;
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
    transition: transform 0.12s;
}

.wv-download-btn:hover {
    transform: translateY(-2px);
}

.wv-note {
    margin: 20px 0;
    padding: 16px 18px;
    background: #f8fafc;
    border-left: 3px solid var(--primary-color);
    border-radius: var(--wv-radius-sm);
    text-align: left;
}

.wv-note h3 {
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.wv-note p {
    color: var(--wv-text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.wv-badge {
    display: inline-block;
    padding: 6px 14px;
    background: #eff6ff;
    color: #1d4ed8;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 8px;
}

.wv-poem {
    margin: 28px 0;
    padding: 24px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: var(--wv-radius-sm);
    border-left: 3px solid var(--primary-color);
    text-align: left;
}

.wv-poem-title {
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 12px;
}

.wv-poem-text {
    color: var(--wv-text);
    font-size: 0.95rem;
    line-height: 1.75;
    font-style: italic;
    white-space: pre-line;
}

.wv-poem-author {
    color: var(--wv-text-muted);
    font-size: 0.8rem;
    text-align: right;
    margin-top: 10px;
}

.wv-divider {
    display: flex;
    align-items: center;
    margin: 20px 0 16px;
    color: var(--wv-text-muted);
    font-size: 0.75rem;
}

.wv-divider::before,
.wv-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--wv-border);
}

.wv-divider span {
    padding: 0 12px;
}

.wv-sso-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px 16px;
    background: white;
    color: var(--wv-text);
    border: 1px solid var(--wv-border);
    border-radius: var(--wv-radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.15s, border-color 0.15s;
}

.wv-sso-btn:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
}

.wv-link-muted {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
}

.wv-link-muted:hover {
    text-decoration: underline;
}

.wv-footer-link {
    text-align: center;
    margin-top: 20px;
    font-size: 0.875rem;
    color: var(--wv-text-muted);
}

.wv-footer-link a {
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: none;
}

body.wv-app .joke-section {
    border-radius: var(--wv-radius);
    border: 1px solid var(--wv-border);
    box-shadow: var(--wv-shadow);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

body.wv-app .upload-section {
    border-radius: var(--wv-radius);
    border: 1px solid var(--wv-border);
    box-shadow: var(--wv-shadow);
}

/* Dashboard polish */
body.wv-app .container {
    max-width: 1200px;
    margin: 32px auto;
    padding: 0 24px;
}

body.wv-app .stat-card {
    border-radius: var(--wv-radius-sm);
    border: 1px solid var(--wv-border);
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--wv-shadow);
}

body.wv-app .upload-zone {
    border-radius: var(--wv-radius);
    border: 2px dashed #cbd5e1;
    background: #fafbfc;
}

body.wv-app .upload-zone:hover {
    border-color: var(--primary-color);
    background: #eff6ff;
}

body.wv-app .files-section {
    border-radius: var(--wv-radius);
    border: 1px solid var(--wv-border);
    overflow: hidden;
    box-shadow: var(--wv-shadow);
}

@media (max-width: 640px) {
    .wv-card,
    .wv-auth-card {
        padding: 28px 22px;
    }
    .header {
        padding: 12px 16px;
    }
}