:root {
    --bg-black: #0b0c0e;
    --bg-panel: #141518;
    --bg-panel-alt: #1b1d21;
    --border-dim: #2a2c31;
    --red: #c8102e;
    --red-dark: #8c0c20;
    --red-glow: rgba(200, 16, 46, 0.35);
    --text-main: #e8e8ea;
    --text-dim: #9a9ca3;
    --green: #3fae5c;
    --amber: #d69e2e;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    background: var(--bg-black);
    color: var(--text-main);
    background-image:
        linear-gradient(180deg, rgba(200,16,46,0.04), transparent 200px);
}

a { color: inherit; text-decoration: none; }

.app-shell {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 230px;
    background: var(--bg-panel);
    border-right: 1px solid var(--border-dim);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 22px 18px;
    border-bottom: 1px solid var(--border-dim);
}

.brand-mark {
    width: 36px;
    height: 36px;
    background: linear-gradient(145deg, var(--red), var(--red-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    border-radius: 4px;
    box-shadow: 0 0 14px var(--red-glow);
}

.brand-name {
    font-weight: 800;
    letter-spacing: 1px;
    font-size: 15px;
}

.brand-sub {
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: 1.5px;
}

.sidebar-nav {
    padding: 14px 10px;
    flex: 1;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 4px;
    font-size: 13px;
    color: var(--text-dim);
    margin-bottom: 2px;
    border-left: 2px solid transparent;
}

.sidebar-nav a:hover {
    background: var(--bg-panel-alt);
    color: var(--text-main);
}

.sidebar-nav a.active {
    background: var(--bg-panel-alt);
    color: var(--text-main);
    border-left: 2px solid var(--red);
}

.nav-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-dim);
}

.sidebar-nav a.active .nav-dot,
.sidebar-nav a:hover .nav-dot {
    background: var(--red);
    box-shadow: 0 0 6px var(--red-glow);
}

.sidebar-footer {
    padding: 14px 18px;
    border-top: 1px solid var(--border-dim);
}

.user-name {
    font-size: 13px;
    font-weight: 600;
}

.logout-link {
    font-size: 11px;
    color: var(--text-dim);
}

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

.lang-switch {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
}

.lang-link {
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 3px;
    color: var(--text-dim);
    border: 1px solid var(--border-dim);
    letter-spacing: 0.5px;
}

.lang-link:hover { color: var(--text-main); border-color: var(--red); }

.lang-link.active {
    color: #fff;
    background: linear-gradient(145deg, var(--red), var(--red-dark));
    border-color: var(--red-dark);
}

/* Main content */
.main-content {
    flex: 1;
    padding: 28px 34px;
    max-width: 1300px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 22px;
}

.page-title {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.4px;
}

.page-title small {
    display: block;
    font-size: 11px;
    color: var(--text-dim);
    font-weight: 400;
    letter-spacing: 1.5px;
    margin-top: 3px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    background: var(--bg-panel-alt);
    border: 1px solid var(--border-dim);
    color: var(--text-main);
    border-radius: 4px;
    font-size: 13px;
    cursor: pointer;
    font-weight: 600;
}

.btn:hover { border-color: var(--red); }

.btn-primary {
    background: linear-gradient(145deg, var(--red), var(--red-dark));
    border-color: var(--red-dark);
}

.btn-primary:hover { box-shadow: 0 0 12px var(--red-glow); }

.btn-danger {
    background: transparent;
    border-color: var(--red-dark);
    color: #ff6b7d;
}

.btn-sm { padding: 5px 10px; font-size: 12px; }

/* Cards / stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 26px;
}

.stat-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-dim);
    border-radius: 6px;
    padding: 18px;
    border-top: 2px solid var(--red);
}

.stat-value {
    font-size: 26px;
    font-weight: 800;
}

.stat-label {
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-top: 4px;
}

.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-dim);
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 20px;
}

a.panel { transition: border-color 0.15s; }
a.panel:hover { border-color: var(--red); }

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

th {
    text-align: left;
    padding: 10px 12px;
    color: var(--text-dim);
    font-size: 11px;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border-dim);
}

td {
    padding: 11px 12px;
    border-bottom: 1px solid var(--border-dim);
}

tr:hover td { background: rgba(200,16,46,0.04); }

.badge {
    display: inline-block;
    padding: 3px 9px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.badge-new { background: rgba(154,156,163,0.15); color: var(--text-dim); }
.badge-contacted { background: rgba(214,158,46,0.15); color: var(--amber); }
.badge-proposal { background: rgba(59,130,246,0.15); color: #60a5fa; }
.badge-negotiation { background: rgba(200,16,46,0.15); color: #ff6b7d; }
.badge-won { background: rgba(63,174,92,0.15); color: var(--green); }
.badge-lost { background: rgba(90,90,90,0.2); color: #7a7c82; }

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group { margin-bottom: 16px; }
.form-group.full { grid-column: 1 / -1; }

label {
    display: block;
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

input[type=text], input[type=email], input[type=tel], input[type=number],
input[type=date], input[type=password], select, textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-black);
    border: 1px solid var(--border-dim);
    border-radius: 4px;
    color: var(--text-main);
    font-size: 13px;
    font-family: inherit;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--red);
    box-shadow: 0 0 0 2px var(--red-glow);
}

textarea { resize: vertical; min-height: 80px; }

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 6px;
}

/* Flash */
.flash {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 18px;
    font-size: 13px;
    border-left: 3px solid var(--green);
    background: rgba(63,174,92,0.08);
}

.flash-error {
    border-left-color: var(--red);
    background: rgba(200,16,46,0.08);
}

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

.login-box {
    width: 360px;
    background: var(--bg-panel);
    border: 1px solid var(--border-dim);
    border-radius: 8px;
    padding: 34px;
    border-top: 3px solid var(--red);
}

.login-box h1 {
    font-size: 16px;
    letter-spacing: 1px;
    margin-bottom: 2px;
}

.login-box .brand-sub {
    margin-bottom: 24px;
}

.empty-state {
    text-align: center;
    padding: 50px 20px;
    color: var(--text-dim);
}

.link-muted { color: var(--text-dim); font-size: 12px; }
.link-muted:hover { color: var(--red); }

.detail-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-dim);
    font-size: 13px;
}

.info-row .label { color: var(--text-dim); }

.timeline-item {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-dim);
    font-size: 13px;
}

.timeline-item .meta {
    color: var(--text-dim);
    font-size: 11px;
    margin-top: 3px;
}

@media (max-width: 900px) {
    .form-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .detail-grid { grid-template-columns: 1fr; }
}