/**
 * owl.li — Webmail Minimalist B&W
 */

:root {
    --bg: #000;
    --bg-elevated: #0a0a0a;
    --bg-input: #111;
    --border: #222;
    --text: #fff;
    --text-muted: #666;
    --accent: #fff;
    --accent-hover: #ccc;
    --danger: #ff3333;
    
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'SF Mono', Consolas, monospace;
    
    --sidebar-width: 248px;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #fff;
        --bg-elevated: #fafafa;
        --bg-input: #f5f5f5;
        --border: #e0e0e0;
        --text: #000;
        --text-muted: #666;
        --accent: #000;
        --accent-hover: #333;
    }
}

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

body {
    font-family: var(--font);
    font-size: 14px;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* Layout — Proton-style: sidebar | main */
.webmail-layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    grid-template-rows: 1fr;
    min-height: 100vh;
}

.webmail-sidebar {
    display: flex;
    flex-direction: column;
    background: var(--bg-elevated);
    border-right: 1px solid var(--border);
    padding: 1rem 0.75rem 1rem;
    min-height: 100vh;
}

.sidebar-brand {
    padding: 0 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1rem;
}

.webmail-sidebar .logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: -0.02em;
    color: var(--text);
    text-decoration: none;
}

.webmail-sidebar .logo:hover {
    color: var(--text-muted);
}

.logo-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    color: var(--text);
}

.logo-text {
    line-height: 1.2;
}

.webmail-content {
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--bg);
}

.webmail-main {
    flex: 1;
    padding: 1.25rem 1.5rem 2rem;
    overflow-y: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border: 1px solid var(--text);
    cursor: pointer;
    transition: all 100ms;
}

.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover { background: transparent; color: var(--text); }
.btn-secondary { background: transparent; border-color: var(--border); color: var(--text); }
.btn-secondary:hover { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn-danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.65rem; }

.compose-btn {
    width: calc(100% - 1.5rem);
    margin: 0 0.75rem 1.25rem;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1rem;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: none;
    border-radius: 8px;
}

.btn-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* Folders — icon + label column */
.folder-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    overflow-y: auto;
    padding: 0 0.25rem;
    min-height: 0;
}

.folder-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    opacity: 0.85;
}

.folder-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem 0.75rem;
    margin: 0 0.25rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0;
    text-transform: none;
    text-decoration: none;
    border-radius: 8px;
    border-left: none;
    transition: background 0.12s ease, color 0.12s ease;
}

.folder-item:hover {
    color: var(--text);
    background: var(--bg-input);
}

.folder-item:hover .folder-icon {
    opacity: 1;
}

.folder-item.active {
    color: var(--text);
    background: var(--bg-input);
    font-weight: 600;
}

.folder-item.active .folder-icon {
    opacity: 1;
    color: var(--text);
}

.folder-label {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Sidebar footer — search, settings, user */
.sidebar-footer {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    margin: 0 0.25rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.12s ease, color 0.12s ease;
}

.sidebar-link:hover {
    color: var(--text);
    background: var(--bg-input);
}

.sidebar-link-logout:hover {
    color: var(--danger);
}

button.sidebar-link {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    width: 100%;
    text-align: left;
}

.js-mode-toggle {
    color: var(--text-muted);
}

.js-mode-toggle:hover {
    color: var(--text);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    margin: 0.25rem 0.25rem 0;
    color: var(--text-muted);
    font-size: 0.75rem;
    border-radius: 8px;
}

.sidebar-user-email {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text);
    font-weight: 500;
}

/* Folder View */
.folder-view {
    max-width: 900px;
}

.folder-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.folder-header h1 {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.message-count {
    color: var(--text-muted);
    font-size: 0.7rem;
    letter-spacing: 0.05em;
}

/* Message List */
.message-list {
    display: flex;
    flex-direction: column;
}

.message-row {
    display: grid;
    grid-template-columns: 180px 1fr 80px;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-muted);
    text-decoration: none;
    transition: color 100ms;
}

.message-row:hover {
    color: var(--text);
}

.message-row.unread {
    color: var(--text);
}

.message-row.unread .msg-from,
.message-row.unread .msg-subject {
    font-weight: 600;
}

.msg-from {
    font-size: 0.8125rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.msg-subject {
    font-size: 0.8125rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.msg-date {
    font-size: 0.75rem;
    text-align: right;
    letter-spacing: 0.02em;
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
    padding-top: 1rem;
}

.page-info {
    color: var(--text-muted);
    font-size: 0.7rem;
    letter-spacing: 0.05em;
}

.empty-folder {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Message View */
.message-view {
    max-width: 800px;
}

.message-nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.inline-form {
    display: inline-flex;
    gap: 0.5rem;
}

.message-content {
    border: 1px solid var(--border);
}

.message-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.message-header h1 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.message-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.meta-row {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
}

.meta-label {
    width: 50px;
    flex-shrink: 0;
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.meta-value {
    color: var(--text);
}

.message-body {
    padding: 1.5rem;
    line-height: 1.7;
}

.text-content {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    white-space: pre-wrap;
    margin: 0;
    color: var(--text);
}

.html-content {
    font-size: 0.9rem;
}

.html-content img {
    max-width: 100%;
}

.no-content {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.external-image {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--border);
    font-size: 0.6875rem;
}

.message-attachments {
    margin-top: 1.5rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
}

.message-attachments h3 {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    color: var(--text-muted);
}

.att-size {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Compose */
.compose-view {
    max-width: 700px;
}

.compose-view h1 {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.compose-form {
    max-width: 100%;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: inherit;
    font-size: 0.875rem;
}

.form-group textarea {
    resize: vertical;
    font-family: var(--font-mono);
    line-height: 1.6;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--text);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 2rem;
}

/* Search */
.search-form { margin-bottom: 2rem; }

.search-row { display: flex; gap: 0.5rem; }

.search-row input[type="text"] {
    flex: 1;
    padding: 0.5rem 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
}

.search-row select {
    padding: 0.5rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
}

/* Settings */
.settings-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.settings-section:last-child { border-bottom: none; }
.settings-section h2 { font-size: 1rem; margin-bottom: 1rem; }
.settings-section h3 { font-size: 0.875rem; margin-top: 1rem; margin-bottom: 0.5rem; }

.settings-section dl {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1rem;
}

.settings-section dt { font-weight: 500; }

.settings-links { list-style: none; }
.settings-links li { margin-bottom: 0.5rem; }
.settings-links .danger { color: var(--danger); }

.quota-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.quota-used { height: 100%; background: var(--accent); }
.quota-info { font-size: 0.8125rem; color: var(--text-muted); }

/* Login */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
    background: var(--bg);
}

.login-container {
    width: 100%;
    max-width: 380px;
}

.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-owl {
    width: 64px;
    height: 64px;
    color: var(--text);
}

.login-container h1 {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-align: center;
    margin-bottom: 2rem;
}

.login-form {
    text-align: left;
}

.login-form .form-group {
    margin-bottom: 1.25rem;
}

.login-form .form-group label {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.login-form .form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: inherit;
}

.login-form .form-group input:focus {
    outline: none;
    border-color: var(--text);
}

.login-form .form-group input::placeholder {
    color: var(--text-muted);
}

.login-form .form-actions {
    margin-top: 1.5rem;
}

.login-form .btn {
    width: 100%;
    justify-content: center;
}

.login-links {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.login-links a {
    color: var(--text-muted);
}

.login-links a:hover {
    color: var(--text);
}

/* Messages */
.message {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    font-size: 0.8125rem;
}

.message-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--accent);
    color: var(--accent);
}

.message-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 72px;
    }

    .webmail-layout {
        grid-template-columns: var(--sidebar-width) 1fr;
    }

    .sidebar-brand .logo-text,
    .folder-label,
    .sidebar-link span,
    .sidebar-user-email,
    .compose-label {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }

    .compose-btn {
        width: 44px;
        height: 44px;
        margin: 0 auto 0.75rem;
        padding: 0;
        border-radius: 10px;
    }

    .compose-btn .btn-icon {
        margin: 0;
    }

    .sidebar-brand {
        padding: 0 0 0.75rem;
        text-align: center;
    }

    .webmail-sidebar .logo {
        justify-content: center;
    }

    .folder-item,
    .sidebar-link,
    .sidebar-user {
        justify-content: center;
        padding: 0.6rem 0.5rem;
    }

    .folder-item .folder-icon,
    .sidebar-link .folder-icon {
        margin: 0;
    }

    .msg-date {
        display: none;
    }

    .message-row {
        grid-template-columns: 1fr 2fr;
    }
}