/* Complete NPU Theme Redesign */

:root {
    --primary-color: #253f8e;
    --secondary-color: #0066cc;
    --accent-color: #f8c300;
    --text-color: #333333;
    --light-bg: #f5f5f5;
    --white: #ffffff;
    --error-color: #e74c3c;
}

/* Basic reset and page setup */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--light-bg);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
}

/* Hide original background implementation */
#background_url {
    display: none;
}

/* Container styles */
.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: 0;
}

/* Card redesign */
.card {
    border: none;
    border-radius: 10px;
    overflow: hidden;
    background-color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.card-body {
    padding: 0;
}

/* Title bar */
.title {
    background-color: var(--primary-color) !important;
    color: var(--white) !important;
    border: none !important;
    border-radius: 0 !important;
    margin: 0 !important;
    padding: 1.5rem !important;
    text-align: center;
}

.title h1 {
    font-size: 1.8rem;
    margin: 0;
    font-weight: 600;
}

/* Warning alert redesign */
.alert-warning {
    background-color: #FFF8E1 !important;
    border-left: 4px solid var(--accent-color) !important;
    color: var(--text-color) !important;
    padding: 1rem 1rem 1rem 3rem !important;
    position: relative;
    margin: 0 !important;
    box-shadow: none !important;
    border-radius: 0 !important;
}

.alert-warning .fa {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: var(--accent-color);
    font-size: 1.2rem;
}

/* Hide info alert background */
.alert-info {
    background-color: transparent !important;
    border: none !important;
    padding: 2rem !important;
    margin: 0 !important;
    box-shadow: none !important;
}

/* Form redesign */
.form-horizontal {
    margin: 0;
    padding: 0;
}

/* Label styling */
.col-form-label {
    display: block !important;
    width: 100% !important;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    text-align: left !important;
    padding: 0 !important;
}

/* Row adjustments */
.row {
    margin: 0 !important;
}

.col-sm-4, .col-sm-8 {
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
}

/* Input group redesign */
.input-group {
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.input-group-text {
    background-color: var(--primary-color) !important;
    color: white !important;
    border: none !important;
    padding: 0.75rem !important;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px !important;
}

.form-control {
    flex: 1;
    border: 1px solid #e0e0e0 !important;
    border-left: none !important;
    height: 48px !important;
    padding: 0.75rem !important;
    font-size: 1rem !important;
}

.form-control:focus {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 0.2rem rgba(37, 63, 142, 0.25) !important;
}

/* Submit button redesign */
.offset-sm-4 {
    margin: 0 !important;
}

.btn-success {
    background-color: var(--primary-color) !important;
    border: none !important;
    color: white !important;
    width: 100% !important;
    padding: 0.85rem !important;
    font-size: 1.1rem !important;
    font-weight: 600 !important;
    border-radius: 8px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin-top: 0.5rem !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1) !important;
}

.btn-success .fa {
    margin-right: 10px;
}

.btn-success:hover, .btn-success:focus {
    background-color: #1e3478 !important;
}

/* Copyright footer */
.container::after {
    content: '© 2025 Nakhon Phanom University';
    display: block;
    text-align: center;
    padding: 1.5rem 0;
    color: #666;
    font-size: 0.9rem;
}

/* Override shadow classes */
.shadow {
    box-shadow: none !important;
}

/* Responsive adjustments - maintain same appearance on all screens */
@media (min-width: 576px) {
    .col-sm-4, .col-sm-8, .offset-sm-4 {
        width: 100% !important;
        margin-left: 0 !important;
        padding: 0 !important;
    }
    
    .text-end {
        text-align: left !important;
    }
}