:root {
    /* Color Palette */
    --bg-dark: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --danger: #ef4444;
    --success: #10b981;
    
    /* Glassmorphism */
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    --glass-blur: blur(10px);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body.dark-theme {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow: hidden; /* App feel */
}

/* Responsive App Container */
.app-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    background-color: var(--bg-dark);
    overflow: hidden;
}

@media (min-width: 768px) {
    .app-container {
        flex-direction: row;
    }
}

/* Glassmorphism Utilities */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}

/* Navigation */
.glass-nav {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(to bottom, rgba(15, 23, 42, 0.9), transparent);
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(to right, #60a5fa, #c084fc);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-left: 0.5rem;
    cursor: pointer;
    transition: transform 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    transform: scale(1.1);
}

/* Sidebar Styles */
.sidebar {
    width: 280px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 100;
    flex-shrink: 0;
}

.sidebar-item {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: background 0.3s, transform 0.2s;
}

.sidebar-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.sidebar-item i {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Responsive Helpers */
.desktop-only {
    display: none !important;
}

.mobile-only {
    display: flex !important;
}

@media (min-width: 768px) {
    .desktop-only {
        display: flex !important;
    }
    
    .mobile-only {
        display: none !important;
    }
}

/* Bottom Navigation */
.bottom-nav {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    justify-content: space-around;
    padding: 1rem 0;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--glass-border);
    border-radius: 24px 24px 0 0;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.75rem;
    transition: color 0.3s;
}

.nav-item i {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.nav-item.active, .nav-item:hover {
    color: var(--accent-color);
}

/* Main Content Area */
.content-area {
    flex: 1;
    position: relative;
    overflow-y: auto;
    height: 100%;
    width: 100%;
}

/* Inputs & Buttons */
.input-group {
    position: relative;
    margin-bottom: 1rem;
}

.input-group i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.glass-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.glass-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.primary-btn {
    width: 100%;
    padding: 1rem;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s, transform 0.1s;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

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

.primary-btn:disabled {
    background: #475569;
    cursor: not-allowed;
}

/* Glassmorphism Navigation Bottom */
.glass-nav-bottom {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    justify-content: space-around;
    padding: 1rem 0;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--glass-border);
    border-radius: 24px 24px 0 0;
}

/* Animations */
@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes driveAcross {
    0% { transform: translateX(-100px); opacity: 0; }
    50% { transform: translateX(0); opacity: 1; }
    100% { transform: translateX(100px); opacity: 0; }
}

.car-icon {
    font-size: 4rem;
    color: var(--accent-color);
    animation: driveAcross 2s ease-in-out forwards;
    display: inline-block;
}

.pulse-animation {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); }
    100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
}

/* SOS Button */
.sos-btn {
    position: absolute;
    bottom: 90px;
    right: 20px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--danger);
    color: white;
    border: none;
    font-weight: 700;
    z-index: 1000;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.5);
}

/* Chat Bubbles */
.chat-bubble {
    max-width: 80%;
    padding: 0.75rem 1rem;
    border-radius: 16px;
    font-size: 0.875rem;
    position: relative;
    animation: slideUp 0.3s ease-out;
}

.chat-bubble.sent {
    background: var(--accent-color);
    border-bottom-right-radius: 4px;
    align-self: flex-end;
}

.chat-bubble.received {
    background: rgba(255, 255, 255, 0.1);
    border-bottom-left-radius: 4px;
    align-self: flex-start;
}

/* SOS Alert Toast */
.sos-alert-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 300px;
    background: rgba(239, 68, 68, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 1rem;
    color: white;
    z-index: 9999;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease-out;
}

.sos-alert-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #fff;
    font-size: 0.9rem;
}

.sos-alert-header i {
    font-size: 1.1rem;
    animation: blink 1s infinite;
}

.sos-alert-body {
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.sos-alert-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

@keyframes blink {
    0% { opacity: 1; }
    50% { opacity: 0.3; }
    100% { opacity: 1; }
}

/* Blinking Red SOS Marker */
.sos-marker {
    background-color: var(--danger);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 0 0 rgba(239, 68, 68, 0.8);
    animation: sosPulse 1.2s infinite;
}

@keyframes sosPulse {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.8); }
    70% { box-shadow: 0 0 0 18px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* Toast Notifications */
.toast-notification {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 1rem 2rem;
    border-radius: 50px;
    color: white;
    font-weight: 600;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.4s;
    opacity: 0;
    pointer-events: none;
}

.toast-notification.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast-notification.success {
    background: rgba(16, 185, 129, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.toast-notification.error {
    background: rgba(239, 68, 68, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.2);
}