/* Import Modern Font */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;700&display=swap');

:root {
    --primary-purple: #6366f1;
    --dark-purple: #4f46e5;
    --soft-white: #ffffff;
    --bg-gradient: linear-gradient(135deg, #f5f7ff 0%, #ecefff 100%);
    /* Enhanced Purple Mix for the Form Box */
    --form-gradient: linear-gradient(145deg, #ffffff 30%, #f3f0ff 100%);
}

body {
    background: var(--bg-gradient) !important;
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: #1e293b;
    
    /* Perfect Centering Logic */
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center; /* Horizontal center */
    align-items: center;     /* Vertical center */
    min-height: 100vh;       /* Takes full height of the viewport */
    width: 100vw;            /* Takes full width of the viewport */
    overflow-x: hidden;      /* Prevents side scrolling */
}

/* Ensure the Bootstrap container doesn't add unwanted margins */
.container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.form-container {
    width: 350px; 
    /* Remove any top margins that might push it down */
    margin: 0 auto; 
    padding: 2rem;
    border-radius: 24px;
    background: var(--form-gradient);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(99, 102, 241, 0.1);
    box-shadow: 
        0 20px 25px -5px rgba(0, 0, 0, 0.05),
        0 10px 10px -5px rgba(0, 0, 0, 0.02),
        inset 0 0 40px rgba(255, 255, 255, 0.5);
    position: relative;
}

.tracker-title {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary-purple);
    text-align: center;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 100;
    color: #475569;
    margin-bottom: 6px;
}

.form-control {
    background: rgba(255, 255, 255, 0.9);
    border: 1.5px solid #e2e8f0;
    border-radius: 12px;
    padding: 8px 12px;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    background: #fff;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.08);
    outline: none;
}

/* --- DUAL BUTTON STYLING --- */

/* Arrival: Solid Purple */
.btn-arrival {
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--dark-purple) 100%) !important;
    color: white !important;
    border: none !important;
    border-radius: 12px;
    padding: 12px;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all 0.3s ease;
}

/* Departure: White/Purple Border Style */
.btn-departure {
    background: #ffffff !important;
    color: var(--dark-purple) !important;
    border: 2px solid #eef2ff !important;
    border-radius: 12px;
    padding: 12px;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    transition: all 0.3s ease;
}

.btn-arrival:hover, .btn-departure:hover {
    transform: translateY(-2px);
    filter: brightness(1.05);
}

.btn-arrival:active, .btn-departure:active {
    transform: translateY(0);
}

/* Utility Buttons (Save/Autofill) */
.btn-outline-secondary {
    border: 1.5px solid #e2e8f0;
    color: #64748b;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.75rem;
}

.btn-secondary {
    background: #f1f5f9 !important;
    color: #475569 !important;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.75rem;
}

/* Checkbox Style */
.form-check-label {
    font-size: 0.8rem;
    color: #64748b;
    cursor: pointer;
}

/* Loading Overlay Styles */
.loading-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(4px);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.spinner-border {
    width: 2.5rem;
    height: 2.5rem;
    color: var(--primary-purple) !important;
}

/* Access Denied Styling */
#access-denied-container {
    width: 350px;
    margin: 0 auto;
    padding: 2rem;
    border-radius: 24px;
    background: var(--form-gradient);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(99, 102, 241, 0.1);
    box-shadow: 
        0 20px 25px -5px rgba(0, 0, 0, 0.05),
        0 10px 10px -5px rgba(0, 0, 0, 0.02),
        inset 0 0 40px rgba(255, 255, 255, 0.5);
    text-align: center;
    position: relative;
}

#access-denied-container h2 {
    color: #ef4444; /* Red color for denied */
    font-weight: 700;
    margin-bottom: 1rem;
}

#access-denied-container p {
    color: #64748b;
    font-size: 0.9rem;
}