/* CSS RESET & VARIABLES */
:root {
    --bg-base: #0b0f19;
    --bg-surface: rgba(17, 24, 39, 0.6);
    --bg-surface-hover: rgba(17, 24, 39, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    --color-primary: #0ea5e9;
    --color-primary-hover: #38bdf8;
    --color-accent: #14b8a6;
    
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-error: #f43f5e;
    --color-error-bg: rgba(244, 63, 94, 0.1);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.1);
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-inverse: #0f172a;
    
    --font-stack: 'Outfit', sans-serif;
    --shadow-main: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --radius-main: 16px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-base);
    background-image: 
        radial-gradient(at 10% 20%, rgba(14, 165, 233, 0.08) 0px, transparent 50%),
        radial-gradient(at 90% 80%, rgba(20, 184, 166, 0.08) 0px, transparent 50%);
    color: var(--text-main);
    font-family: var(--font-stack);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.5;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* APP HEADER */
.app-header {
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.logo-tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.system-status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.04);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-warning);
    display: inline-block;
}

.status-dot.pulsing {
    animation: status-pulse 1.8s infinite;
}

.status-dot.connected {
    background-color: var(--color-success);
    box-shadow: 0 0 10px var(--color-success);
}

.status-dot.disconnected {
    background-color: var(--color-error);
    box-shadow: 0 0 10px var(--color-error);
}

.status-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-main);
}

/* MAIN CONTENT LAYOUT */
.dashboard-main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

/* GLASS CONTAINER */
.glass-card {
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-main);
    padding: 2rem;
    box-shadow: var(--shadow-main);
    transition: var(--transition-smooth);
}

.glass-card:hover {
    border-color: var(--border-hover);
}

/* TRACK FORM */
.form-container {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.section-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.add-gp-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-group {
    display: flex;
    gap: 0.75rem;
    width: 100%;
}

input[type="text"],
input[type="email"] {
    flex: 1;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.85rem 1.2rem;
    color: var(--text-main);
    font-family: var(--font-stack);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-smooth);
}

input[type="text"]:focus,
input[type="email"]:focus {
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 15px rgba(14, 165, 233, 0.15);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border: none;
    border-radius: 12px;
    color: var(--text-main);
    font-family: var(--font-stack);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.85rem 1.8rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.35);
    filter: brightness(1.1);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-main);
    font-family: var(--font-stack);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
}

.btn-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

.hidden {
    display: none !important;
}

.form-feedback {
    font-size: 0.9rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-top: 0.5rem;
}

.error-message {
    background-color: var(--color-error-bg);
    color: #fda4af;
    border: 1px solid rgba(244, 63, 94, 0.2);
}

.success-message {
    background-color: var(--color-success-bg);
    color: #6ee7b7;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.instructions-collapsed {
    margin-top: 1rem;
    text-align: center;
}

.small-text {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* MONITORS SECTION */
.section-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.main-heading {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.sound-toggle-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toggle-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.monitors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.grid-loader {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 0;
    gap: 1rem;
    color: var(--text-muted);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--color-primary);
    animation: spin 1s linear infinite;
}

/* MONITOR CARD */
.monitor-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-main);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.monitor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--border-color);
    transition: var(--transition-smooth);
}

.monitor-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.6);
}

/* Card States */
.monitor-card.available::before {
    background: linear-gradient(90deg, var(--color-success), var(--color-accent));
}

.monitor-card.available {
    box-shadow: 0 8px 30px -10px rgba(16, 185, 129, 0.15);
}

.monitor-card.blocked::before {
    background: linear-gradient(90deg, var(--color-error), #ec4899);
}

.monitor-card.unstructured::before {
    background: linear-gradient(90deg, var(--color-warning), #d97706);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
}

.gp-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
}

.gp-title {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text-main);
}

.gp-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.badge-status {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.65rem;
    border-radius: 6px;
}

.badge-status.available {
    background-color: var(--color-success-bg);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-status.blocked {
    background-color: var(--color-error-bg);
    color: #fb7185;
    border: 1px solid rgba(244, 63, 94, 0.2);
}

.badge-status.unstructured {
    background-color: var(--color-warning-bg);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.card-details-row {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.detail-item {
    display: flex;
    justify-content: space-between;
}

.detail-val {
    font-weight: 600;
    color: var(--text-main);
}

.card-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: auto;
}

.card-actions .btn-primary,
.card-actions .btn-secondary {
    flex: 1;
    font-size: 0.85rem;
    padding: 0.65rem 1rem;
    text-decoration: none;
    text-align: center;
}

/* CARD HISTORY PANEL */
.card-history {
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 220px;
    overflow-y: auto;
}

.history-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

/* NO MONITORS YET */
.empty-monitors {
    grid-column: 1 / -1;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-main);
    padding: 4rem 2rem;
    text-align: center;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.empty-icon {
    font-size: 2.5rem;
}

/* LOGS TABLE */
.logs-container {
    padding: 1.5rem;
}

.table-wrapper {
    overflow-x: auto;
    margin-top: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.logs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    text-align: left;
}

.logs-table th,
.logs-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.logs-table th {
    background-color: rgba(255, 255, 255, 0.02);
    font-weight: 600;
    color: var(--text-muted);
}

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

.logs-table .empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 2.5rem 0;
}

/* MODAL OVERLAY */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 1;
    transition: var(--transition-smooth);
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-card {
    max-width: 480px;
    width: 90%;
    background: #111827;
    position: relative;
    border: 1px solid var(--border-hover);
    transform: scale(1);
    transition: var(--transition-smooth);
}

.modal-overlay.hidden .modal-card {
    transform: scale(0.9);
}

.modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1.25rem;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.modal-close-btn:hover {
    color: var(--text-main);
}

.modal-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.modal-icon {
    font-size: 1.6rem;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.modal-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.modal-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.modal-input-group input {
    width: 100%;
}

.modal-input-group button {
    width: 100%;
}

/* CUSTOM ALERT MODAL SPECIFICS */
.alert-modal-card {
    max-width: 440px;
    border-color: var(--color-success);
}

.alert-modal-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
    margin-bottom: 1rem;
}

.alert-modal-badge {
    background-color: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid var(--color-success);
    font-size: 0.75rem;
    font-weight: 800;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    letter-spacing: 0.05em;
    animation: status-pulse 1.5s infinite;
}

.alert-modal-body {
    text-align: center;
    margin-bottom: 1.5rem;
}

.alert-modal-action-box {
    margin-top: 1.25rem;
}

.block-btn {
    display: block;
    text-align: center;
    text-decoration: none;
    width: 100%;
}

.modal-footer {
    display: flex;
    justify-content: center;
}

/* FOOTER */
.app-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* ANIMATIONS */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes status-pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

/* RESPONSIVE DESIGN */
@media (max-width: 640px) {
    .header-container {
        padding: 1rem;
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .dashboard-main {
        padding: 1.5rem 1rem;
        gap: 1.5rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .btn-primary {
        width: 100%;
    }
    
    .section-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
}