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

:root {
    --bg-primary: #000000;
    --bg-card: #121212;
    --bg-hover: #1a1a1a;
    --border-color: #333333;
    --text-primary: #FFFFFF;
    --text-secondary: #AAAAAA;
    --text-muted: #666666;
    --btn-primary-bg: #FFFFFF;
    --btn-primary-text: #000000;
    --btn-primary-hover: #E0E0E0;
    --btn-secondary-bg: transparent;
    --btn-secondary-text: #FFFFFF;
    --btn-secondary-border: #333333;
    --btn-secondary-hover: #1a1a1a;
    --status-pending: #FFCC00;
    --status-pending-bg: rgba(255, 204, 0, 0.15);
    --status-approved: #28A745;
    --status-approved-bg: rgba(40, 167, 69, 0.15);
    --status-cancelled: #DC3545;
    --status-cancelled-bg: rgba(220, 53, 69, 0.15);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --radius: 8px;
    --transition: 150ms ease;
}

html, body {
    height: 100%;
    width: 100%;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.screen {
    display: none;
    flex-direction: column;
    min-height: 100vh;
}

.screen.active {
    display: flex;
}

/* ===== LOGIN SCREEN ===== */
#login-screen {
    justify-content: center;
    align-items: center;
    padding: 24px;
}

.login-container {
    width: 100%;
    max-width: 360px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 40px 32px;
    box-shadow: var(--shadow);
}

.logo {
    display: flex;
    justify-content: center;
    margin-bottom: 32px;
}

.nixygt-logo {
    width: 180px;
    height: auto;
    max-height: 54px;
    object-fit: contain;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 14px 16px;
    color: var(--text-primary);
    font-size: 16px;
    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(--btn-primary-bg);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    margin-top: 8px;
}

.btn-primary:hover {
    background: var(--btn-primary-hover);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    border: 1px solid var(--btn-secondary-border);
    padding: 10px 20px;
    font-size: 13px;
}

.btn-secondary:hover {
    background: var(--btn-secondary-hover);
}

.error-message {
    color: var(--status-cancelled);
    font-size: 13px;
    text-align: center;
    min-height: 18px;
}

.error-message.hidden {
    display: none;
}

.register-link {
    display: block;
    text-align: center;
    margin-top: 24px;
    color: var(--text-secondary);
    font-size: 14px;
    text-decoration: none;
    transition: color var(--transition);
}

.register-link:hover {
    color: var(--text-primary);
}

/* ===== DASHBOARD SCREEN ===== */
#dashboard-screen {
    flex-direction: column;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-card);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header .logo {
    margin: 0;
}

.header .nixygt-logo {
    width: 140px;
    height: auto;
    max-height: 42px;
}

.welcome {
    flex: 1;
    text-align: center;
}

#welcome-message {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
}

.main-content {
    flex: 1;
    padding: 32px 24px;
    max-width: 1000px;
    width: 100%;
    margin: 0 auto;
}

.section-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

/* ===== REQUESTS TABLE ===== */
.table-container {
    overflow-x: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
}

.requests-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.requests-table th,
.requests-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.requests-table th {
    background: var(--bg-primary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.requests-table td {
    font-size: 14px;
    color: var(--text-primary);
}

.requests-table tbody tr {
    transition: background var(--transition);
}

.requests-table tbody tr:hover {
    background: var(--bg-hover);
}

.requests-table tbody tr:last-child td {
    border-bottom: none;
}

.request-id {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 13px;
    color: var(--text-secondary);
}

.service-name {
    font-weight: 500;
}

.request-date {
    color: var(--text-secondary);
    font-size: 13px;
    white-space: nowrap;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.status-badge.pending {
    background: var(--status-pending-bg);
    color: var(--status-pending);
    border: 1px solid rgba(255, 204, 0, 0.3);
}

.status-badge.approved {
    background: var(--status-approved-bg);
    color: var(--status-approved);
    border: 1px solid rgba(40, 167, 69, 0.3);
}

.status-badge.cancelled {
    background: var(--status-cancelled-bg);
    color: var(--status-cancelled);
    border: 1px solid rgba(220, 53, 69, 0.3);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state.hidden {
    display: none;
}

/* ===== ACTION SECTION ===== */
.action-section {
    margin-top: 32px;
    text-align: center;
}

.btn-action {
    padding: 16px 32px;
    font-size: 16px;
    width: 100%;
    max-width: 360px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
    .login-container {
        padding: 32px 24px;
        margin: 16px;
    }

    .header {
        padding: 16px;
        flex-wrap: wrap;
        gap: 12px;
    }

    .header .logo {
        order: 1;
    }

    .welcome {
        order: 3;
        width: 100%;
        text-align: center;
    }

    .header .nixygt-logo {
        width: 120px;
        height: 36px;
    }

    .main-content {
        padding: 20px 16px;
    }

    .requests-table th,
    .requests-table td {
        padding: 12px 14px;
    }

    .status-badge {
        padding: 5px 10px;
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .requests-table {
        min-width: 500px;
    }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}