/* =========================================
   VoucherReset - Modern Dark Theme
   ========================================= */

:root {
    --bg-primary: #070c1a;
    --bg-secondary: rgba(17, 24, 43, 0.72);
    --bg-card: rgba(19, 28, 49, 0.82);
    --bg-card-hover: rgba(30, 41, 68, 0.9);
    --bg-input: rgba(12, 21, 38, 0.85);
    --text-primary: #e8ecf6;
    --text-secondary: #8b98b0;
    --text-muted: #5a6784;
    --accent-primary: #7c5cff;
    --accent-secondary: #6366f1;
    --v-blue: #3b82f6;
    --v-cyan: #22d3ee;
    --v-pink: #e879a6;
    --gradient-start: #7c5cff;
    --gradient-mid: #6366f1;
    --gradient-end: #e879a6;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #f43f5e;
    --border-color: rgba(99, 102, 241, 0.18);
    --border-soft: rgba(148, 163, 184, 0.12);
    --shadow: 0 20px 50px -25px rgba(0, 0, 0, 0.8);
    --shadow-lg: 0 30px 80px -25px rgba(0, 0, 0, 0.85);
    --radius: 18px;
    --radius-sm: 11px;
    --transition: 0.25s ease;
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    background: radial-gradient(1100px 620px at 50% -12%, #17244a 0%, transparent 55%), var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    position: relative;
    overflow-x: hidden;
}

/* ---- 3D network background ---- */
#net-bg { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; display: block; }
.bg-veil {
    position: fixed; inset: 0; z-index: 1; pointer-events: none;
    background: radial-gradient(760px 560px at 50% 42%, rgba(7,12,26,.35) 0%, rgba(7,12,26,.12) 58%, transparent 88%);
}

/* ---- Layout ---- */
.app-wrapper { position: relative; z-index: 2; min-height: 100vh; display: flex; flex-direction: column; }
.container { width: 100%; max-width: 720px; margin: 0 auto; padding: 0 20px; }
main { flex: 1; padding: 30px 0 50px; }

/* ---- Header ---- */
.app-header {
    padding: 26px 0;
    text-align: center;
    border-bottom: 1px solid var(--border-soft);
    background: linear-gradient(180deg, rgba(11,17,32,.6), transparent);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.app-header .brand {
    display: inline-flex;
    align-items: center;
    gap: 13px;
    text-decoration: none;
    color: var(--text-primary);
}

.app-header .brand-icon {
    position: relative;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-mid) 55%, var(--v-cyan) 130%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 23px;
    font-weight: 800;
    color: #fff;
    flex-shrink: 0;
    box-shadow: 0 12px 30px -8px rgba(124, 92, 255, 0.6);
}

.app-header .brand-icon::before {
    content: '';
    position: absolute;
    inset: -5px;
    border-radius: 18px;
    z-index: -1;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), var(--v-cyan));
    filter: blur(13px);
    opacity: 0.5;
    animation: haloPulse 3.2s ease-in-out infinite;
}

@keyframes haloPulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 0.7; } }

.app-header .brand-text {
    font-size: 25px;
    font-weight: 800;
    letter-spacing: -0.4px;
    text-align: left;
    background: linear-gradient(100deg, #c4b5fd, var(--gradient-start) 35%, var(--gradient-mid) 65%, var(--v-cyan));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.app-header .brand-text span { -webkit-text-fill-color: transparent; }

.app-header .tagline {
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: 3px;
    text-align: left;
    letter-spacing: 2.5px;
    text-transform: uppercase;
}

/* ---- Footer ---- */
.app-footer {
    text-align: center;
    padding: 22px 0;
    border-top: 1px solid var(--border-soft);
    color: var(--text-muted);
    font-size: 13px;
}
.app-footer strong { color: var(--text-secondary); font-weight: 600; }
.app-footer a { color: var(--accent-secondary); text-decoration: none; }

/* ---- Section Headings ---- */
.section-title {
    font-size: 16px; font-weight: 600; color: var(--text-secondary);
    margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1px;
}

/* ---- Glass card base (top accent line + entrance) ---- */
.voucher-card, .login-card, .result-card, .table-wrapper, .modal {
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(19,28,49,.82) 0%, rgba(23,33,54,.82) 100%);
    backdrop-filter: blur(7px);
    -webkit-backdrop-filter: blur(7px);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}
.voucher-card::before, .login-card::before, .result-card::before, .modal::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, transparent, var(--gradient-start), var(--v-cyan), var(--gradient-mid), transparent);
}

@keyframes cardIn { from { opacity: 0; transform: translateY(14px) scale(.985); } to { opacity: 1; transform: none; } }

/* ---- Router Select Dropdown ---- */
.select-wrapper { position: relative; }

.select-wrapper select {
    width: 100%;
    padding: 14px 16px;
    padding-right: 84px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 16px;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238b98b0' stroke-width='2' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.select-wrapper select:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.16);
}

.select-wrapper select option { background: #131c31; color: var(--text-primary); padding: 8px; }

.select-status {
    position: absolute; right: 42px; top: 50%; transform: translateY(-50%);
    font-size: 12px; font-weight: 500; display: none; align-items: center; gap: 6px;
}
.select-status.visible { display: flex; }
.select-status .status-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.select-status .status-dot.online { background: var(--success); box-shadow: 0 0 6px rgba(34, 197, 94, 0.6); }
.select-status .status-dot.offline { background: var(--danger); box-shadow: 0 0 6px rgba(244, 63, 94, 0.4); }
.select-status .status-dot.checking { background: var(--text-muted); animation: pulse-dot 1.2s infinite; }
.select-status .status-text { color: var(--text-muted); }
.select-status .status-text.online { color: var(--success); }
.select-status .status-text.offline { color: var(--danger); }
@keyframes pulse-dot { 0%, 100% { opacity: 0.4; } 50% { opacity: 1; } }

/* ---- Empty State ---- */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }
.empty-state p { font-size: 15px; }

/* ---- Voucher Form ---- */
@keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }

.voucher-card {
    max-width: 440px;
    margin: 10px auto 0;
    border-radius: var(--radius);
    padding: 32px 28px;
    animation: cardIn .5s cubic-bezier(.2,.7,.3,1) both;
}

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text-secondary); margin-bottom: 8px; }

.form-group input {
    width: 100%;
    padding: 13px 15px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 16px;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input::placeholder { color: var(--text-muted); }
.form-group input:focus { border-color: var(--accent-primary); box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.16); }

/* ---- Buttons ---- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 13px 24px; border: none; border-radius: var(--radius-sm);
    font-size: 15px; font-weight: 600; font-family: inherit; cursor: pointer;
    transition: filter var(--transition), transform .1s, box-shadow var(--transition), background var(--transition);
    text-decoration: none; width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid) 55%, var(--v-blue));
    color: #fff;
    box-shadow: 0 12px 28px -10px rgba(124, 92, 255, 0.6);
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.65; cursor: not-allowed; transform: none; filter: none; }

.btn-secondary { background: rgba(255,255,255,0.04); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--accent-primary); }

/* ---- Result Messages ---- */
.result-wrapper { display: none; animation: slideDown 0.3s ease; margin-top: 18px; }
.result-wrapper.visible { display: block; }

.result-card { max-width: 440px; margin: 0 auto; border-radius: var(--radius); padding: 40px 26px; text-align: center; }
.result-card .result-icon { font-size: 56px; margin-bottom: 16px; line-height: 1; }
.result-card .result-title { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.result-card .result-message { font-size: 15px; color: var(--text-secondary); margin-bottom: 28px; line-height: 1.5; }

.result-card.result-success .result-title { color: var(--success); }
.result-card.result-expired .result-title { color: var(--danger); }
.result-card.result-not_found .result-title { color: var(--warning); }
.result-card.result-error .result-title { color: var(--danger); }
.result-card.result-success::before { background: linear-gradient(90deg, transparent, var(--success), transparent); }
.result-card.result-expired::before, .result-card.result-error::before { background: linear-gradient(90deg, transparent, var(--danger), transparent); }
.result-card.result-not_found::before { background: linear-gradient(90deg, transparent, var(--warning), transparent); }

/* ---- Loading Spinner ---- */
.spinner {
    display: inline-block; width: 20px; height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3); border-top-color: #fff;
    border-radius: 50%; animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Admin Styles ---- */
.admin-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
.admin-header h2 { font-size: 21px; font-weight: 700; }

/* Admin Login */
.login-wrapper { display: flex; align-items: center; justify-content: center; min-height: calc(100vh - 230px); }
.login-card {
    border-radius: var(--radius); padding: 38px 30px; width: 100%; max-width: 390px;
    box-shadow: var(--shadow-lg);
    animation: cardIn .5s cubic-bezier(.2,.7,.3,1) both;
}
.login-card h2 { text-align: center; margin-bottom: 24px; font-size: 21px; font-weight: 700; }
.login-card .error-msg {
    background: rgba(244, 63, 94, 0.12); border: 1px solid rgba(244, 63, 94, 0.3);
    color: var(--danger); padding: 10px 14px; border-radius: var(--radius-sm);
    font-size: 14px; margin-bottom: 16px; text-align: center;
}

/* Admin Table */
.admin-container { max-width: 980px; }
.table-wrapper { border-radius: var(--radius); }
.table-wrapper::before { display: none; }
.table-wrapper table { width: 100%; border-collapse: collapse; }
.table-wrapper th, .table-wrapper td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--border-soft); font-size: 14px; }
.table-wrapper th {
    background: rgba(11, 17, 32, 0.6); color: var(--text-secondary); font-weight: 600;
    text-transform: uppercase; font-size: 11.5px; letter-spacing: 0.5px;
}
.table-wrapper tr:last-child td { border-bottom: none; }
.table-wrapper tr:hover td { background: rgba(124, 92, 255, 0.06); }
.table-wrapper .actions { display: flex; gap: 8px; }

.btn-sm { padding: 6px 13px; font-size: 13px; border-radius: 8px; width: auto; }
.btn-edit { background: rgba(124, 92, 255, 0.16); color: #a78bfa; border: 1px solid rgba(124, 92, 255, 0.32); }
.btn-edit:hover { background: rgba(124, 92, 255, 0.28); }
.btn-delete { background: rgba(244, 63, 94, 0.12); color: var(--danger); border: 1px solid rgba(244, 63, 94, 0.3); }
.btn-delete:hover { background: rgba(244, 63, 94, 0.22); }
.btn-add {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
    color: #fff; border: none; width: auto; padding: 10px 20px;
    box-shadow: 0 10px 22px -10px rgba(124, 92, 255, 0.6);
}
.btn-add:hover { filter: brightness(1.08); }
.btn-logout { background: rgba(255, 255, 255, 0.05); color: var(--text-secondary); border: 1px solid var(--border-color); width: auto; padding: 10px 20px; font-size: 13px; }
.btn-logout:hover { background: rgba(244, 63, 94, 0.12); color: var(--danger); border-color: rgba(244, 63, 94, 0.3); }

/* Admin Modal */
.modal-overlay {
    display: none; position: fixed; inset: 0; background: rgba(4, 8, 18, 0.66);
    backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
    z-index: 1000; align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.visible { display: flex; }
.modal {
    border-radius: var(--radius); padding: 30px 26px; width: 100%; max-width: 480px;
    box-shadow: var(--shadow-lg); animation: cardIn 0.25s ease;
}
.modal h3 { font-size: 18px; margin-bottom: 20px; padding-bottom: 14px; border-bottom: 1px solid var(--border-soft); }
.modal .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.modal .form-actions { display: flex; gap: 12px; margin-top: 24px; }
.modal .form-actions .btn { flex: 1; }

.password-masked { font-family: monospace; color: var(--text-muted); letter-spacing: 1px; }

/* ---- Responsive ---- */
@media (max-width: 600px) {
    .voucher-card { padding: 24px 18px; }
    .result-card { padding: 32px 18px; }
    .table-wrapper { overflow-x: auto; }
    .table-wrapper table { min-width: 620px; }
    .modal .form-row { grid-template-columns: 1fr; }
    .admin-header { flex-direction: column; align-items: stretch; }
    .admin-header .btn { width: 100%; }
    .app-header .brand-text { font-size: 22px; }
}

/* ---- Utility ---- */
.mt-2 { margin-top: 12px; }
.mt-4 { margin-top: 24px; }
.mb-2 { margin-bottom: 12px; }
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }