:root {
    --voip-navy: #1e439a;
    --voip-navy-dark: #16357c;
    --voip-blue: #4c8ef5;
    --voip-blue-mid: #6aa3ff;
    --voip-sky: #d7e6fb;
    --voip-sky-2: #eaf2fc;
    --voip-text: #2b3a55;
    --voip-muted: #8b97ab;
    --voip-line: #e6edf5;
    --voip-input: #f4f7fb;
    --voip-white: #ffffff;
    --voip-danger: #1e439a;
    --voip-shadow: 0 10px 30px rgba(30, 67, 154, 0.08);
    --voip-radius: 8px;
    --voip-sidebar: 108px;
    --voip-header: 78px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; min-height: 100%; }
body.voip-body, body.voip-login-body {
    font-family: "Open Sans", "Segoe UI", sans-serif;
    color: var(--voip-text);
    background: var(--voip-white);
}
img { max-width: 100%; border: 0; }
a { color: var(--voip-blue); text-decoration: none; }
button, input, select, textarea { font-family: inherit; }

.voip-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--voip-white);
}

.voip-header {
    height: var(--voip-header);
    display: grid;
    grid-template-columns: 220px 1fr auto;
    align-items: center;
    gap: 24px;
    padding: 0 28px;
    border-bottom: 1px solid var(--voip-line);
    background: var(--voip-white);
    position: sticky;
    top: 0;
    z-index: 20;
}
.voip-logo { display: flex; align-items: center; }
.voip-logo img { height: 42px; width: auto; }

.voip-search {
    position: relative;
    max-width: 640px;
    width: 100%;
    margin: 0 auto;
}
.voip-search input[type="search"] {
    width: 100%;
    height: 42px;
    border: 1px solid #dbe4ef;
    background: #f7f9fc;
    border-radius: 22px;
    padding: 0 46px 0 18px;
    color: var(--voip-text);
    font-size: 14px;
    outline: none;
}
.voip-search input::placeholder { color: #a8b3c4; }
.voip-search-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    border: 0;
    background: transparent;
    color: var(--voip-navy);
    cursor: pointer;
    display: grid;
    place-items: center;
}
.voip-search-btn svg { width: 18px; height: 18px; }
.voip-search-results {
    position: absolute;
    left: 0; right: 0; top: 48px;
    background: var(--voip-white);
    border: 1px solid var(--voip-line);
    border-radius: 10px;
    box-shadow: var(--voip-shadow);
    overflow: hidden;
    z-index: 30;
}
.voip-search-results a, .voip-search-results .voip-search-empty {
    display: block;
    padding: 10px 14px;
    color: var(--voip-text);
    font-size: 13px;
    border-bottom: 1px solid var(--voip-line);
}
.voip-search-results a:hover { background: var(--voip-sky-2); }

.voip-user { display: flex; align-items: center; gap: 10px; }
.voip-user-avatar {
    width: 38px; height: 38px; border-radius: 50%;
    background: var(--voip-sky); color: var(--voip-navy);
    display: grid; place-items: center;
}
.voip-user-avatar svg { width: 20px; height: 20px; }
.voip-user-meta { display: flex; flex-direction: column; line-height: 1.2; }
.voip-user-name { color: var(--voip-navy); font-weight: 700; font-size: 14px; }
.voip-user-role { color: var(--voip-muted); font-size: 12px; }
.voip-logout {
    width: 34px; height: 34px; color: var(--voip-navy);
    display: grid; place-items: center;
}
.voip-logout svg { width: 20px; height: 20px; }

.voip-shell { display: flex; flex: 1; min-height: 0; }
.voip-sidebar {
    width: var(--voip-sidebar);
    flex: 0 0 var(--voip-sidebar);
    padding: 22px 14px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: var(--voip-white);
}
.voip-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 92px;
    border-radius: 10px;
    color: var(--voip-navy);
    font-size: 12px;
    font-weight: 600;
    padding: 12px 6px;
}
.voip-nav svg { width: 34px; height: 34px; }
.voip-nav.is-active, .voip-nav:hover { background: var(--voip-sky); }

.voip-main {
    flex: 1;
    padding: 18px 36px 80px;
    min-width: 0;
}
.voip-crumbs {
    color: var(--voip-blue-mid);
    font-size: 13px;
    margin-bottom: 8px;
}
.voip-crumbs a { color: var(--voip-blue-mid); }
.voip-crumbs .is-current { text-decoration: underline; color: var(--voip-navy); }
.voip-crumb-sep { margin: 0 6px; color: var(--voip-blue-mid); }

.voip-page-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 22px;
}
.voip-page-head h1 {
    margin: 0;
    color: var(--voip-navy);
    font-size: 34px;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.voip-page-actions { display: flex; gap: 10px; position: relative; }

.voip-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 0;
    border-radius: 6px;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
    cursor: pointer;
    color: var(--voip-white);
    background: var(--voip-navy);
    text-decoration: none;
    line-height: 1;
}
.voip-btn svg { width: 16px; height: 16px; }
.voip-btn-light { background: var(--voip-blue); color: var(--voip-white); }
.voip-btn-ghost {
    background: var(--voip-white);
    color: var(--voip-navy);
    border: 1px solid var(--voip-blue);
}
.voip-btn-sky { background: #c5dbf8; color: var(--voip-navy); }
.voip-btn-disabled, .voip-btn[disabled] {
    opacity: 0.45;
    pointer-events: none;
}
.voip-btn-warn {
    background: var(--voip-white);
    color: var(--voip-navy);
    border: 1px solid var(--voip-blue);
}

.voip-footer {
    padding: 8px 28px 14px;
    text-align: right;
}
.voip-footer p {
    margin: 0;
    color: #c0c7d2;
    font-size: 12px;
}

.voip-flash {
    margin-bottom: 16px;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 14px;
}
.voip-flash-ok { background: #e8f7ee; color: #1b6b3a; }
.voip-flash-err { background: #fdeeee; color: #a12828; }

.voip-kpis {
    display: grid;
    grid-template-columns: repeat(3, minmax(180px, 240px));
    justify-content: center;
    gap: 48px;
    padding: 64px 0 40px;
}
.voip-kpi {
    text-align: center;
    color: var(--voip-navy);
}
.voip-kpi-icon {
    width: 72px; height: 72px; margin: 0 auto 12px;
    color: var(--voip-blue);
}
.voip-kpi-icon svg { width: 72px; height: 72px; }
.voip-kpi-value {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 6px;
}
.voip-kpi-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--voip-blue);
}

.voip-table-wrap {
    border-top: 1px solid var(--voip-line);
    overflow: auto;
    max-height: calc(100vh - 260px);
}
.voip-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.voip-table th, .voip-table td {
    text-align: left;
    padding: 14px 12px;
    border-bottom: 1px solid var(--voip-line);
    white-space: nowrap;
    vertical-align: middle;
}
.voip-table th {
    color: var(--voip-muted);
    font-weight: 600;
    font-size: 13px;
    position: sticky;
    top: 0;
    background: var(--voip-white);
}
.voip-table th a { color: inherit; display: inline-flex; align-items: center; gap: 4px; }
.voip-table th svg { width: 12px; height: 12px; }
.voip-table td { color: var(--voip-text); }
.voip-table .voip-row-actions { display: flex; gap: 8px; }
.voip-empty { color: var(--voip-muted); text-align: center; padding: 28px 12px; }

.voip-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px 80px;
    max-width: 980px;
    margin-bottom: 36px;
}
.voip-dl { margin: 0; }
.voip-dl dt {
    color: var(--voip-muted);
    font-size: 13px;
    font-weight: 600;
    margin: 0 0 4px;
}
.voip-dl dd {
    margin: 0 0 16px;
    color: var(--voip-navy);
    font-size: 15px;
    white-space: pre-line;
}

.voip-section-title {
    color: var(--voip-navy);
    font-size: 22px;
    margin: 8px 0 12px;
}

.voip-form-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 28px 24px;
    margin-bottom: 36px;
}
.voip-field, .voip-field-stack {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 0;
    padding: 0;
    border: 0;
    min-width: 0;
}
.voip-field > span, .voip-field legend {
    color: var(--voip-navy);
    font-size: 13px;
    font-weight: 700;
    padding: 0;
}
.voip-input-wrap { position: relative; display: block; }
.voip-input-wrap i {
    position: absolute;
    right: 8px;
    top: 8px;
    color: var(--voip-blue);
    pointer-events: none;
}
.voip-input-wrap i svg { width: 14px; height: 14px; }
.voip-field input, .voip-field select, .voip-field textarea {
    width: 100%;
    border: 0;
    border-bottom: 1px solid #d5deea;
    background: transparent;
    padding: 8px 24px 8px 0;
    color: #6b778c;
    font-size: 14px;
    outline: none;
    resize: vertical;
}
.voip-field input:focus, .voip-field select:focus, .voip-field textarea:focus {
    border-bottom-color: var(--voip-navy);
    color: var(--voip-text);
}

.voip-form-actions {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 12px;
}
.voip-form-actions-left, .voip-form-actions-right { display: flex; gap: 10px; flex-wrap: wrap; }

.voip-price-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
    max-width: 980px;
    margin: 28px 0 40px;
}
.voip-price-card h2 {
    margin: 0 0 4px;
    color: var(--voip-navy);
    font-size: 22px;
}
.voip-price-code {
    margin: 0 0 18px;
    color: var(--voip-muted);
    font-size: 14px;
}
.voip-price-card label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--voip-navy);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 8px;
}
.voip-price-card label svg { width: 14px; height: 14px; color: var(--voip-blue); }
.voip-price-card input[type="text"] {
    width: 140px;
    display: block;
    border: 0;
    border-bottom: 1px solid #d5deea;
    padding: 6px 0;
    font-size: 22px;
    color: #6b778c;
    margin-bottom: 8px;
    outline: none;
}
.voip-price-unit { color: var(--voip-muted); font-size: 12px; margin: 0 0 16px; }
.voip-dropdown {
    position: absolute;
    right: 0;
    top: 42px;
    background: #eef3f8;
    min-width: 120px;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: var(--voip-shadow);
    z-index: 12;
}
.voip-dropdown a {
    display: block;
    padding: 8px 14px;
    color: var(--voip-navy);
    font-weight: 700;
    font-size: 13px;
}
.voip-dropdown a:hover { background: #dce7f4; }

.voip-login-body {
    min-height: 100vh;
    background: linear-gradient(180deg, #eef5ff 0%, #f7fbff 42%, #ffffff 100%);
    position: relative;
}
.voip-login-body::after {
    content: "";
    position: absolute;
    inset: 0 0 0 32%;
    background: url("../images/voip_one_backdrop.jpg") right center / cover no-repeat;
    opacity: 0.22;
    pointer-events: none;
}
.voip-login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 16px 72px;
    position: relative;
    z-index: 1;
}
.voip-login-card {
    width: 100%;
    max-width: 560px;
    background: var(--voip-white);
    border-radius: 4px;
    box-shadow: 0 18px 50px rgba(30, 67, 154, 0.12);
    padding: 36px 48px 32px;
}
.voip-login-card .voip-login-logo { display: block; margin: 0 auto 18px; height: 70px; }
.voip-login-card hr { border: 0; border-top: 1px solid #e5eaf1; margin: 8px 0 28px; }
.voip-login-msg { text-align: center; color: #c0392b; font-size: 15px; margin: 0 0 12px; }
.voip-login-msg.ok { color: #1b6b3a; }
.voip-login-row {
    display: grid;
    grid-template-columns: 120px 1fr;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.voip-login-row label { color: #7d8796; font-size: 14px; }
.voip-login-row input {
    width: 100%;
    height: 40px;
    border: 0;
    background: #eef1f4;
    padding: 0 12px;
    font-size: 14px;
    color: var(--voip-text);
    outline: none;
}
.voip-login-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 18px;
    gap: 12px;
}
.voip-login-actions a { color: var(--voip-blue); font-size: 14px; }
.voip-login-actions .voip-btn { min-width: 120px; justify-content: center; text-transform: uppercase; }
.voip-login-secondary { display: flex; gap: 8px; margin-top: 12px; }

@media (max-width: 1100px) {
    .voip-form-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .voip-kpis { grid-template-columns: repeat(3, minmax(140px, 1fr)); gap: 24px; }
}
@media (max-width: 820px) {
    .voip-header { grid-template-columns: 1fr; height: auto; padding: 12px; }
    .voip-shell { flex-direction: column; }
    .voip-sidebar { width: auto; flex-direction: row; }
    .voip-form-grid, .voip-price-grid, .voip-detail, .voip-kpis { grid-template-columns: 1fr; }
    .voip-main { padding: 16px; }
}