/**
 * DHL Main Stylesheet
 * Consolidated & Optimized
 */

/* ===== CSS Variables ===== */
:root {
    --dhl-red: #d40511;
    --dhl-red-dark: #b00410;
    --dhl-yellow: #ffcc00;
    --dhl-yellow-dark: #e6b800;
    --dhl-gray: #333333;
    --dhl-gray-light: #666666;
    --dhl-gray-lighter: #999999;
    --dhl-bg: #f5f5f5;
    --dhl-white: #ffffff;
    --dhl-border: #e0e0e0;
    --dhl-success: #28a745;
    --dhl-error: #dc3545;
    --dhl-warning: #ffc107;
    --dhl-info: #17a2b8;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== Base Reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Delivery', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--dhl-bg);
    color: var(--dhl-gray);
    line-height: 1.5;
    min-height: 100vh;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Delivery', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

a {
    color: var(--dhl-red);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--dhl-red-dark);
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes progressPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(212, 5, 17, 0.4); }
    50% { box-shadow: 0 0 0 10px rgba(212, 5, 17, 0); }
}

/* ===== Utility Classes ===== */
.fade-in { animation: fadeIn var(--transition-normal) ease-out; }
.fade-in-up { animation: fadeInUp var(--transition-normal) ease-out; }
.fade-in-down { animation: fadeInDown var(--transition-normal) ease-out; }
.slide-in-left { animation: slideInLeft var(--transition-normal) ease-out; }
.slide-in-right { animation: slideInRight var(--transition-normal) ease-out; }

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* ===== Progress Bar Animated ===== */
.progress-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 30px 20px;
    background: var(--dhl-white);
    margin-bottom: 20px;
}

.progress-steps {
    display: flex;
    align-items: center;
    gap: 0;
    max-width: 500px;
    width: 100%;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    flex: 1;
    z-index: 1;
}

.progress-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 18px;
    left: 50%;
    width: 100%;
    height: 3px;
    background: var(--dhl-border);
    z-index: -1;
    transition: background var(--transition-normal);
}

.progress-step.completed:not(:last-child)::after {
    background: var(--dhl-red);
}

.progress-step.active:not(:last-child)::after {
    background: linear-gradient(90deg, var(--dhl-red) 50%, var(--dhl-border) 50%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite linear;
}

.progress-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--dhl-white);
    border: 3px solid var(--dhl-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    color: var(--dhl-gray-lighter);
    transition: all var(--transition-normal);
    position: relative;
}

.progress-step.completed .progress-circle {
    background: var(--dhl-red);
    border-color: var(--dhl-red);
    color: var(--dhl-white);
}

.progress-step.completed .progress-circle::after {
    content: '✓';
    font-size: 16px;
}

.progress-step.completed .progress-circle span {
    display: none;
}

.progress-step.active .progress-circle {
    border-color: var(--dhl-red);
    color: var(--dhl-red);
    animation: progressPulse 2s infinite;
}

.progress-label {
    margin-top: 8px;
    font-size: 11px;
    color: var(--dhl-gray-lighter);
    text-align: center;
    transition: color var(--transition-fast);
}

.progress-step.completed .progress-label,
.progress-step.active .progress-label {
    color: var(--dhl-gray);
    font-weight: 600;
}

/* ===== Form Styles ===== */
.form-container {
    background: var(--dhl-white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-md);
    max-width: 500px;
    margin: 0 auto 30px;
    animation: fadeInUp var(--transition-normal) ease-out;
}

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

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--dhl-gray);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--dhl-border);
    border-radius: var(--radius-md);
    font-size: 16px;
    font-family: inherit;
    transition: all var(--transition-fast);
    background: var(--dhl-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--dhl-red);
    box-shadow: 0 0 0 3px rgba(212, 5, 17, 0.1);
}

/* Real-time validation styles */
.form-group input.valid {
    border-color: var(--dhl-success);
}

.form-group input.invalid {
    border-color: var(--dhl-error);
}

.form-group input.valid + .validation-icon::after {
    content: '✓';
    color: var(--dhl-success);
}

.form-group input.invalid + .validation-icon::after {
    content: '✗';
    color: var(--dhl-error);
}

.validation-icon {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    font-weight: bold;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.form-group input.valid + .validation-icon,
.form-group input.invalid + .validation-icon {
    opacity: 1;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

@media (max-width: 500px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--dhl-red-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--dhl-gray);
    color: var(--dhl-white);
}

.btn-secondary:hover {
    background: #444;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--dhl-red);
    color: var(--dhl-red);
}

.btn-outline:hover {
    background: var(--dhl-red);
    color: var(--dhl-white);
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Button loading state */
.btn.loading {
    pointer-events: none;
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    left: 50%;
    top: 50%;
    margin-left: -10px;
    margin-top: -10px;
}

/* ===== Cards ===== */
.card {
    background: var(--dhl-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-fast);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid var(--dhl-border);
    font-weight: 700;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--dhl-border);
    background: var(--dhl-bg);
}

/* ===== Spinner ===== */
.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--dhl-border);
    border-top-color: var(--dhl-red);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 80px;
    height: 80px;
    border-width: 6px;
}

/* DHL branded spinner */
.spinner-dhl {
    width: 60px;
    height: 60px;
    position: relative;
}

.spinner-dhl::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 4px solid var(--dhl-yellow);
    border-top-color: var(--dhl-red);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ===== Alerts ===== */
.alert {
    padding: 15px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    font-size: 14px;
    animation: fadeInDown var(--transition-fast);
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.alert-warning {
    background: #fffbeb;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-info {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* ===== Tracking History ===== */
.tracking-history {
    padding: 20px;
    background: var(--dhl-white);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.tracking-timeline {
    position: relative;
    padding-left: 30px;
}

.tracking-timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--dhl-border);
}

.tracking-event {
    position: relative;
    padding-bottom: 25px;
    animation: fadeInUp var(--transition-normal) ease-out;
    animation-fill-mode: both;
}

.tracking-event:nth-child(1) { animation-delay: 0.1s; }
.tracking-event:nth-child(2) { animation-delay: 0.2s; }
.tracking-event:nth-child(3) { animation-delay: 0.3s; }
.tracking-event:nth-child(4) { animation-delay: 0.4s; }
.tracking-event:nth-child(5) { animation-delay: 0.5s; }

.tracking-event:last-child {
    padding-bottom: 0;
}

.tracking-event::before {
    content: '';
    position: absolute;
    left: -26px;
    top: 4px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--dhl-border);
    border: 2px solid var(--dhl-white);
    box-shadow: 0 0 0 2px var(--dhl-border);
}

.tracking-event.current::before {
    background: var(--dhl-red);
    box-shadow: 0 0 0 2px var(--dhl-red);
    animation: pulse 2s infinite;
}

.tracking-event.completed::before {
    background: var(--dhl-success);
    box-shadow: 0 0 0 2px var(--dhl-success);
}

.tracking-event-title {
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 4px;
}

.tracking-event-date {
    font-size: 12px;
    color: var(--dhl-gray-lighter);
}

.tracking-event-location {
    font-size: 13px;
    color: var(--dhl-gray-light);
    margin-top: 4px;
}

/* ===== Package Image ===== */
.package-image {
    text-align: center;
    padding: 20px;
    animation: fadeIn var(--transition-normal);
}

.package-image img {
    max-width: 200px;
    height: auto;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
    animation: bounce 3s ease-in-out infinite;
}

/* ===== Session Timer ===== */
.session-timer {
    position: fixed;
    top: 10px;
    right: 10px;
    background: rgba(0,0,0,0.8);
    color: var(--dhl-white);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 12px;
    z-index: 1000;
    animation: fadeIn var(--transition-fast);
}

.session-timer.warning {
    background: var(--dhl-warning);
    color: var(--dhl-gray);
}

.session-timer.danger {
    background: var(--dhl-error);
    animation: pulse 1s infinite;
}

/* ===== Payment Summary ===== */
.payment-summary {
    background: var(--dhl-bg);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 20px;
}

.payment-summary-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--dhl-border);
}

.payment-summary-row:last-child {
    border-bottom: none;
    font-weight: 700;
    font-size: 18px;
    padding-top: 15px;
}

.payment-summary-label {
    color: var(--dhl-gray-light);
}

.payment-summary-value {
    font-weight: 600;
}

/* ===== Honeypot (enhanced) ===== */
.hp-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
    height: 0;
    width: 0;
    overflow: hidden;
}

/* Additional honeypots */
.hp-field-2 {
    position: fixed;
    top: -1000px;
    visibility: hidden;
}

.hp-field-3 {
    clip: rect(0,0,0,0);
    border: 0;
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .form-container {
        margin: 0 15px 20px;
        padding: 20px;
    }
    
    .progress-container {
        padding: 20px 10px;
    }
    
    .progress-label {
        font-size: 10px;
    }
    
    .progress-circle {
        width: 30px;
        height: 30px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 15px;
    }
    
    .form-group input,
    .form-group select {
        padding: 12px 14px;
        font-size: 16px; /* Prevent iOS zoom */
    }
}

/* ===== Print Styles ===== */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
    }
    
    .form-container {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ===== Accessibility ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--dhl-red);
    outline-offset: 2px;
}

/* ===== RTL Support ===== */
[dir="rtl"] .tracking-timeline {
    padding-left: 0;
    padding-right: 30px;
}

[dir="rtl"] .tracking-timeline::before {
    left: auto;
    right: 8px;
}

[dir="rtl"] .tracking-event::before {
    left: auto;
    right: -26px;
}

[dir="rtl"] .session-timer {
    right: auto;
    left: 10px;
}