/* ========================================
   LOGISTICS PORTAL - MAIN STYLESHEET
   ======================================== */

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --danger-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --info-color: #3498db;
    --light-gray: #f5f5f5;
    --border-radius: 8px;
    --box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-gray);
    color: #333;
}

/* ========================================
   COMMON COMPONENTS
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

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

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

.btn-warning {
    background: var(--warning-color);
    color: white;
}

.btn-info {
    background: var(--info-color);
    color: white;
}

/* ========================================
   CARDS
   ======================================== */

.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--light-gray);
}

.card-body {
    font-size: 14px;
    line-height: 1.6;
}

.card-footer {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--light-gray);
    text-align: right;
}

/* ========================================
   FORMS
   ======================================== */

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 14px;
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control:disabled {
    background-color: var(--light-gray);
    cursor: not-allowed;
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* ========================================
   ALERTS
   ======================================== */

.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border-left-color: var(--danger-color);
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-left-color: var(--success-color);
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border-left-color: var(--warning-color);
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border-left-color: var(--info-color);
}

.alert-dismissible {
    position: relative;
    padding-right: 40px;
}

.alert-close {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    font-weight: bold;
    opacity: 0.7;
}

.alert-close:hover {
    opacity: 1;
}

/* ========================================
   MODALS
   ======================================== */

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    padding: 30px;
}

.modal-header {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--light-gray);
}

.modal-title {
    font-size: 22px;
    font-weight: bold;
    color: #333;
}

.modal-body {
    margin-bottom: 20px;
    font-size: 14px;
    line-height: 1.6;
}

.modal-footer {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* ========================================
   PROGRESS BAR
   ======================================== */

.progress {
    height: 25px;
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 20px;
}

.progress-bar {
    height: 100%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 12px;
    transition: width 0.3s ease;
}

/* ========================================
   SPINNER/LOADER
   ======================================== */

.spinner-border {
    display: inline-block;
    width: 20px;
    height: 20px;
    vertical-align: middle;
    margin-right: 10px;
    border: 3px solid rgba(102, 126, 234, 0.3);
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ========================================
   TABLE STYLES
   ======================================== */

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.table thead {
    background-color: var(--light-gray);
    font-weight: 600;
}

.table th, .table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.table tbody tr:hover {
    background-color: #f9f9f9;
}

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

/* ========================================
   BADGES
   ======================================== */

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-primary {
    background: rgba(102, 126, 234, 0.2);
    color: #667eea;
}

.badge-success {
    background: rgba(39, 174, 96, 0.2);
    color: var(--success-color);
}

.badge-danger {
    background: rgba(231, 76, 60, 0.2);
    color: var(--danger-color);
}

.badge-warning {
    background: rgba(243, 156, 18, 0.2);
    color: var(--warning-color);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

.text-muted {
    color: #999;
}

.text-danger {
    color: var(--danger-color);
}

.text-success {
    color: var(--success-color);
}

.mt-10 {
    margin-top: 10px;
}

.mt-15 {
    margin-top: 15px;
}

.mt-20 {
    margin-top: 20px;
}

.mb-10 {
    margin-bottom: 10px;
}

.mb-15 {
    margin-bottom: 15px;
}

.mb-20 {
    margin-bottom: 20px;
}

.p-10 {
    padding: 10px;
}

.p-15 {
    padding: 15px;
}

.p-20 {
    padding: 20px;
}

.hidden {
    display: none !important;
}

.inline-block {
    display: inline-block;
}

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.gap-10 {
    gap: 10px;
}

.gap-15 {
    gap: 15px;
}

.gap-20 {
    gap: 20px;
}

.rounded {
    border-radius: var(--border-radius);
}

.shadow {
    box-shadow: var(--box-shadow);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .card {
        padding: 15px;
    }

    .btn {
        width: 100%;
        margin-bottom: 10px;
    }

    .modal-content {
        width: 95%;
        padding: 20px;
    }

    .table {
        font-size: 12px;
    }

    .table th, .table td {
        padding: 8px 10px;
    }

    .flex {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .card {
        padding: 12px;
    }

    .form-control {
        padding: 10px 12px;
        font-size: 16px;
    }

    .btn {
        padding: 10px 15px;
        font-size: 14px;
    }

    .modal-content {
        max-width: 100%;
        width: 95%;
    }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

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

a:focus,
button:focus,
input:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

@keyframes slideDown {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.slide-down {
    animation: slideDown 0.3s ease-out;
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
    body {
        background: white;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }

    .btn, .alert {
        display: none;
    }
}