/* ── Design tokens ─────────────────────────────────────────────────────────── */
:root {
    --bg:          #0f1117;
    --bg-surface:  #1a1d27;
    --bg-card:     #21253a;
    --border:      #2e3350;
    --accent:      #4f6ef7;
    --accent-hover:#3d5ce5;
    --accent-light: rgba(79,110,247,0.12);
    --danger:      #ef4444;
    --danger-hover:#dc2626;
    --success:     #22c55e;
    --text:        #e2e8f0;
    --text-muted:  #64748b;
    --text-dim:    #94a3b8;
    --radius:      10px;
    --radius-lg:   16px;
    --shadow:      0 4px 24px rgba(0,0,0,0.4);
    --font:        'Inter', system-ui, sans-serif;
}

/* ── Reset / base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

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

/* ── Toast notifications ───────────────────────────────────────────────────── */
.toast-container {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

.toast {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .75rem 1rem;
    border-radius: var(--radius);
    font-size: .875rem;
    font-weight: 500;
    min-width: 260px;
    max-width: 360px;
    box-shadow: var(--shadow);
    animation: slideIn .25s ease;
    border: 1px solid var(--border);
}

.toast.success { background: #14532d; border-color: #16a34a; color: #bbf7d0; }
.toast.error   { background: #450a0a; border-color: #b91c1c; color: #fecaca; }
.toast.info    { background: #1e3a8a; border-color: #3b82f6; color: #bfdbfe; }

@keyframes slideIn {
    from { opacity: 0; transform: translateX(20px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .55rem 1.1rem;
    border-radius: var(--radius);
    font-size: .875rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: background .15s, opacity .15s, transform .1s;
    white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary  { background: var(--accent);  color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-danger   { background: var(--danger);  color: #fff; }
.btn-danger:hover:not(:disabled) { background: var(--danger-hover); }

.btn-ghost    { background: transparent; color: var(--text-dim); border: 1px solid var(--border); }
.btn-ghost:hover:not(:disabled) { background: var(--bg-card); color: var(--text); }

.btn-icon {
    padding: .4rem;
    border-radius: 6px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background .15s, color .15s;
}
.btn-icon:hover { background: var(--bg-card); color: var(--text); }

/* ── Form elements ─────────────────────────────────────────────────────────── */
.input {
    width: 100%;
    padding: .65rem .9rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: .9rem;
    font-family: var(--font);
    transition: border-color .15s, box-shadow .15s;
    outline: none;
}
.input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79,110,247,.2);
}
.input::placeholder { color: var(--text-muted); }

textarea.input { resize: vertical; min-height: 120px; line-height: 1.6; }

/* ── Progress bar ──────────────────────────────────────────────────────────── */
.progress-wrap { width: 100%; }
progress {
    width: 100%;
    height: 6px;
    border-radius: 99px;
    border: none;
    overflow: hidden;
    appearance: none;
    background: var(--border);
    display: block;
}
progress::-webkit-progress-bar   { background: var(--border); }
progress::-webkit-progress-value { background: var(--accent); border-radius: 99px; }
progress::-moz-progress-bar      { background: var(--accent); border-radius: 99px; }

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
}

/* ── Auth pages ────────────────────────────────────────────────────────────── */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: radial-gradient(ellipse at 60% 0%, rgba(79,110,247,.18) 0%, transparent 60%),
                var(--bg);
}

.auth-box {
    width: 100%;
    max-width: 420px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow);
}

.auth-logo {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin-bottom: 2rem;
    justify-content: center;
}

.auth-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #fff;
}

.auth-logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -.02em;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: .4rem;
    letter-spacing: -.02em;
}

.auth-subtitle {
    font-size: .875rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.form-group { margin-bottom: 1.1rem; }
.form-label {
    display: block;
    font-size: .8rem;
    font-weight: 500;
    color: var(--text-dim);
    margin-bottom: .4rem;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.input-wrap { position: relative; }
.input-wrap .input { padding-right: 2.75rem; }
.input-wrap .toggle-pw {
    position: absolute;
    right: .75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: .2rem;
    display: flex;
}
.input-wrap .toggle-pw:hover { color: var(--text); }

.auth-divider {
    text-align: center;
    font-size: .8rem;
    color: var(--text-muted);
    margin-top: 1.5rem;
}

/* ── App layout ────────────────────────────────────────────────────────────── */
.app-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 230px;
    flex-shrink: 0;
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 1.25rem 0;
    transition: transform .25s;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: 0 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1rem;
}

.sidebar-logo-icon {
    width: 34px;
    height: 34px;
    background: var(--accent);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: .95rem;
}

.sidebar-logo-text {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -.02em;
}

.sidebar-nav { flex: 1; padding: 0 .75rem; }

.nav-item {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .6rem .75rem;
    border-radius: var(--radius);
    font-size: .875rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    transition: background .15s, color .15s;
    margin-bottom: .15rem;
}
.nav-item:hover    { background: var(--accent-light); color: var(--text); }
.nav-item.active   { background: var(--accent-light); color: var(--accent); }
.nav-item i { width: 16px; text-align: center; }

.sidebar-footer {
    padding: 1rem 1.25rem 0;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.user-pill {
    display: flex;
    align-items: center;
    gap: .65rem;
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .8rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
    text-transform: uppercase;
}

.user-name {
    font-size: .8rem;
    font-weight: 500;
    color: var(--text-dim);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Main content */
.app-main {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.app-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.75rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
    position: sticky;
    top: 0;
    z-index: 10;
}

.topbar-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
}

.app-content {
    padding: 1.75rem;
    max-width: 860px;
    width: 100%;
    margin: 0 auto;
    flex: 1;
}

/* Panels (clipboard / files tabs) */
.panel { display: none; }
.panel.active { display: block; }

/* Section headings */
.section-title {
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--text-muted);
    margin-bottom: .75rem;
}

/* Clipboard item cards */
.clip-item {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: .75rem;
    overflow: hidden;
}

.clip-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .5rem .75rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
}

.clip-item-actions { display: flex; gap: .25rem; }

.clip-item pre {
    margin: 0;
    padding: .85rem;
    font-size: .82rem;
    overflow-x: auto;
    background: transparent !important;
}

/* File item rows */
.file-row {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .75rem 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: .5rem;
}

.file-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    flex-shrink: 0;
    font-size: .9rem;
}

.file-name {
    flex: 1;
    font-size: .875rem;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-actions { display: flex; gap: .4rem; flex-shrink: 0; }

.file-progress-wrap {
    padding: 0 1rem .75rem;
    display: none;
}
.file-progress-wrap.visible { display: block; }
.file-progress-label {
    font-size: .72rem;
    color: var(--text-muted);
    margin-top: .3rem;
}

/* Drop zone */
.drop-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    text-align: center;
    cursor: pointer;
    transition: border-color .2s, background .2s;
    position: relative;
}
.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--accent);
    background: var(--accent-light);
}
.drop-zone input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}
.drop-zone-icon {
    font-size: 2rem;
    color: var(--text-muted);
    margin-bottom: .75rem;
}
.drop-zone-text {
    font-size: .9rem;
    color: var(--text-dim);
}
.drop-zone-sub {
    font-size: .78rem;
    color: var(--text-muted);
    margin-top: .3rem;
}

/* Mobile sidebar toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.2rem;
    cursor: pointer;
    padding: .25rem;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.6);
    z-index: 40;
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0; top: 0; bottom: 0;
        z-index: 50;
        transform: translateX(-100%);
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay.open { display: block; }
    .menu-toggle { display: flex; }
    .app-content { padding: 1.25rem; }
}

/* Landing page */
.landing {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: radial-gradient(ellipse at 50% -10%, rgba(79,110,247,.25) 0%, transparent 55%),
                var(--bg);
    text-align: center;
}

.landing-badge {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: var(--accent-light);
    border: 1px solid rgba(79,110,247,.3);
    color: var(--accent);
    font-size: .75rem;
    font-weight: 600;
    padding: .3rem .8rem;
    border-radius: 99px;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: .06em;
}

.landing-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -.04em;
    color: var(--text);
    margin-bottom: 1rem;
}

.landing-title span { color: var(--accent); }

.landing-sub {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 480px;
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

.landing-actions {
    display: flex;
    gap: .75rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 4rem;
}

.landing-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    max-width: 640px;
    width: 100%;
}

.feature-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    text-align: left;
}

.feature-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: .75rem;
}

.feature-title {
    font-size: .875rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: .3rem;
}

.feature-desc {
    font-size: .78rem;
    color: var(--text-muted);
    line-height: 1.5;
}