/* USAA Style Guide Implementation */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors */
    --usaa-blue: #0A3161;
    --usaa-blue-light: #0d4080;
    --usaa-red: #B31942;
    --usaa-red-dark: #8f1435;
    --pure-white: #FFFFFF;
    --pure-black: #000000;

    /* Secondary Colors */
    --light-gray: #f8f9fa;
    --medium-gray: #dee2e6;
    --dark-gray: #495057;
    --charcoal: #6c757d;

    /* Utility Colors */
    --success-green: #28a745;
    --warning-yellow: #ffc107;
    --error-red: #dc3545;
    --info-blue: #17a2b8;

    /* Spacing Scale */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--pure-black);
    background: linear-gradient(135deg, #ffffff 0%, #f5f7fa 50%, #e8ecf1 100%);
    min-height: 100vh;
}

/* Login Screen */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-lg);
}

.login-card {
    background: linear-gradient(135deg, var(--usaa-blue) 0%, #001f3f 100%);
    padding: var(--space-3xl);
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(10, 49, 97, 0.3);
    max-width: 500px;
    width: 100%;
    color: var(--pure-white);
}

.login-card .header-text h1 {
    color: var(--pure-white);
}

.login-card .header-text .subtitle {
    color: var(--pure-white);
}

.login-form {
    margin-top: var(--space-xl);
}

.login-form label {
    color: var(--pure-white);
    font-weight: 500;
    margin-bottom: var(--space-sm);
    display: block;
}

.login-form input {
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    font-size: 16px;
    font-family: 'Poppins', sans-serif;
    background: rgba(255, 255, 255, 0.1);
    color: var(--pure-white);
    transition: all 0.3s ease;
    margin-bottom: var(--space-md);
}

.login-form input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.login-form input:focus {
    outline: none;
    border-color: var(--pure-white);
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.error-message {
    color: var(--error-red);
    background: var(--pure-white);
    padding: var(--space-sm);
    border-radius: 6px;
    font-size: 14px;
    margin-top: var(--space-md);
    display: none;
}

.error-message.show {
    display: block;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--usaa-blue) 0%, #001f3f 100%);
    color: var(--pure-white);
    padding: var(--space-xl) var(--space-2xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 12px rgba(10, 49, 97, 0.3);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.logo-img {
    height: 60px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.02);
}

.header-text h1 {
    font-size: 1.8em;
    font-weight: 600;
    line-height: 1.3;
    margin: 0;
}

.subtitle {
    font-size: 0.875em;
    font-weight: 300;
    opacity: 0.9;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.user-details {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.user-name {
    font-weight: 600;
    font-size: 1em;
}

.user-rating {
    font-size: 0.875em;
    opacity: 0.9;
}

.connection-status {
    font-size: 0.8em;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 12px;
    margin-top: 4px;
}

.connection-status.connected {
    background: rgba(40, 167, 69, 0.2);
    color: var(--success-green);
}

.connection-status.disconnected {
    background: rgba(108, 117, 125, 0.2);
    color: var(--text-light);
}

.header-actions {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

/* Main Layout with Sidebar */
.main-layout {
    display: flex;
    gap: var(--space-lg);
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
}

/* Container */
.container {
    flex: 1;
    min-width: 0; /* Prevent flex item from overflowing */
}

/* Stats Section */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: linear-gradient(135deg, var(--usaa-blue) 0%, var(--usaa-blue-light) 100%);
    color: var(--pure-white);
    padding: var(--space-xl);
    border-radius: 8px;
    border-left: 4px solid var(--usaa-red);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.stat-card h3 {
    font-size: 3em;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.stat-card p {
    font-size: 1em;
    font-weight: 400;
    opacity: 0.9;
}

/* Card */
.card {
    background: var(--pure-white);
    border-radius: 8px;
    padding: var(--space-xl);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(10, 49, 97, 0.1);
    margin-bottom: var(--space-lg);
}

.card h2 {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--usaa-blue);
    border-bottom: 2px solid var(--usaa-red);
    padding-bottom: var(--space-sm);
    margin-bottom: var(--space-lg);
}

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--dark-gray);
    font-size: 14px;
}

input, textarea, select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--medium-gray);
    border-radius: 6px;
    font-size: 14px;
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--usaa-blue);
    box-shadow: 0 0 0 3px rgba(10, 49, 97, 0.1);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-danger, .btn-success {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.btn-primary {
    background: var(--usaa-blue);
    color: var(--pure-white);
}

.btn-primary:hover {
    background: var(--usaa-blue-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(10, 49, 97, 0.2);
}

.btn-secondary {
    background: var(--charcoal);
    color: var(--pure-white);
}

.btn-secondary:hover {
    background: var(--dark-gray);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(108, 117, 125, 0.2);
}

.btn-danger {
    background: var(--usaa-red);
    color: var(--pure-white);
}

.btn-danger:hover {
    background: var(--usaa-red-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(179, 25, 66, 0.2);
}

.btn-small {
    padding: 6px 8px;
    font-size: 0.8em;
    min-width: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-small:hover {
    transform: scale(1.05);
}

.btn-success {
    background: var(--success-green);
    color: var(--pure-white);
}

.btn-success:hover {
    background: #218838;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(40, 167, 69, 0.2);
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

/* Aircraft Cards */
.aircraft-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-md);
}

.aircraft-card {
    background: var(--light-gray);
    border-radius: 8px;
    padding: var(--space-md);
    border: 2px solid var(--medium-gray);
    transition: all 0.3s ease;
}

.aircraft-card:hover {
    border-color: var(--usaa-blue);
    box-shadow: 0 2px 8px rgba(10, 49, 97, 0.1);
}

.aircraft-card.blinking {
    animation: blink 1s infinite;
    border-color: var(--usaa-red);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.aircraft-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.aircraft-callsign {
    font-size: 1.25em;
    font-weight: 600;
    color: var(--usaa-blue);
}

.aircraft-type {
    font-size: 0.875em;
    color: var(--dark-gray);
    font-weight: 500;
}

.aircraft-route {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: var(--space-sm) 0;
    font-weight: 500;
}

.aircraft-route-arrow {
    color: var(--usaa-red);
}

.aircraft-info {
    font-size: 0.875em;
    color: var(--dark-gray);
    margin: var(--space-xs) 0;
}

.aircraft-phase {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    background: var(--usaa-blue);
    color: var(--pure-white);
    margin: var(--space-sm) 0;
}

.aircraft-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.phase-select {
    width: 100%;
    margin: var(--space-sm) 0;
}

.handoff-input-group {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.handoff-input-group input {
    flex: 1;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--pure-white);
    padding: var(--space-xl);
    border-radius: 12px;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 90%;
}

.modal-header {
    font-size: 24px;
    font-weight: 600;
    color: var(--usaa-blue);
    margin-bottom: var(--space-lg);
}

.modal-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: flex-end;
    margin-top: var(--space-lg);
}

.controller-option {
    background: var(--light-gray);
    padding: var(--space-md);
    border-radius: 6px;
    margin-bottom: var(--space-sm);
    cursor: pointer;
    border: 2px solid var(--medium-gray);
    transition: all 0.3s ease;
}

.controller-option:hover {
    border-color: var(--usaa-blue);
    background: rgba(10, 49, 97, 0.05);
}

.controller-name {
    font-weight: 600;
    color: var(--usaa-blue);
    margin-bottom: var(--space-xs);
}

.controller-details {
    font-size: 0.875em;
    color: var(--dark-gray);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-xl);
    color: var(--charcoal);
    font-style: italic;
}

/* Focus States */
*:focus {
    outline: 2px solid var(--usaa-blue);
    outline-offset: 2px;
}

button:focus, a:focus {
    outline-offset: 4px;
}

/* Responsive Design */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }

    .user-details {
        align-items: center;
    }

    .stats {
        grid-template-columns: 1fr;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .aircraft-grid {
        grid-template-columns: 1fr;
    }

    .logo-img {
        height: 40px;
    }

    .header-text h1 {
        font-size: 1.5em;
    }

    .main-layout {
        flex-direction: column;
    }

    .controllers-sidebar {
        width: 100%;
        max-height: 400px;
        position: static;
    }
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(10, 49, 97, 0.3);
    border-radius: 50%;
    border-top-color: var(--usaa-blue);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Controllers Sidebar */
.controllers-sidebar {
    width: 320px;
    flex-shrink: 0;
    order: 2; /* Place on the right */
    background: var(--pure-white);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    padding: var(--space-xl);
    max-height: calc(100vh - 180px);
    overflow-y: auto;
    position: sticky;
    top: var(--space-xl);
}

.controllers-sidebar h2 {
    color: var(--usaa-blue);
    font-size: 1.25em;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--light-gray);
}

.controllers-sidebar::-webkit-scrollbar {
    width: 8px;
}

.controllers-sidebar::-webkit-scrollbar-track {
    background: var(--light-gray);
    border-radius: 4px;
}

.controllers-sidebar::-webkit-scrollbar-thumb {
    background: var(--medium-gray);
    border-radius: 4px;
}

.controllers-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--usaa-blue);
}

.controller-item {
    background: var(--bg-gray);
    border-radius: 8px;
    padding: var(--space-md);
    margin-bottom: var(--space-md);
    border-left: 4px solid var(--usaa-blue);
    transition: all 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
}

.controller-info {
    flex: 1;
}

.controller-item:hover {
    background: rgba(10, 49, 97, 0.05);
    transform: translateX(-4px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* User's own controller position */
.controller-item.own-position {
    background: linear-gradient(135deg, rgba(179, 25, 66, 0.1) 0%, rgba(179, 25, 66, 0.05) 100%);
    border-left: 4px solid var(--usaa-red);
    box-shadow: 0 2px 12px rgba(179, 25, 66, 0.15);
    order: -1; /* Pin to top */
}

.controller-item.own-position:hover {
    background: linear-gradient(135deg, rgba(179, 25, 66, 0.15) 0%, rgba(179, 25, 66, 0.08) 100%);
    box-shadow: 0 4px 16px rgba(179, 25, 66, 0.2);
}

.controller-item.own-position .controller-callsign {
    color: var(--usaa-red);
}

.controller-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95em;
    margin-bottom: 4px;
}

.controller-callsign {
    font-family: 'Courier New', monospace;
    color: var(--usaa-blue);
    font-weight: 700;
    font-size: 0.9em;
    margin-bottom: 4px;
}

.controller-radio {
    color: var(--text-light);
    font-size: 0.85em;
    margin-bottom: 2px;
}

.controller-frequency {
    color: var(--text-light);
    font-size: 0.85em;
    font-family: 'Courier New', monospace;
}

.empty-controllers {
    text-align: center;
    color: var(--text-light);
    font-size: 0.9em;
    padding: var(--space-lg);
}

#controllersList {
    display: flex;
    flex-direction: column;
}