/* Mobile-first CSS for Northern Ireland Email Campaign */
/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', sans-serif;
    background: linear-gradient(135deg, #E8F5E8 0%, #F1F8E9 100%);
    color: #1B5E20;
    min-height: 100vh;
    font-size: 16px;
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 0.5em;
}

h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1em;
    color: #2E7D32;
}

/* Container */
.container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background: linear-gradient(135deg, #1B5E20 0%, #2E7D32 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 8px rgba(27, 94, 32, 0.1);
}

.header-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo svg {
    display: block;
    flex-shrink: 0;
}

.header-text {
    flex: 1;
    min-width: 0;
}

.title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    color: inherit;
    word-break: break-word;
}

.tagline {
    font-size: 0.875rem;
    margin: 0;
    opacity: 0.9;
    color: inherit;
    font-weight: 400;
}

/* Admin specific header */
.admin-header {
    background: linear-gradient(135deg, #4A148C 0%, #6A1B9A 100%);
}

/* Navigation */
.admin-nav {
    background: white;
    border-bottom: 1px solid #E0E0E0;
    padding: 0.75rem 0;
}

.nav-links {
    display: flex;
    gap: 1rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: #666;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
    min-height: 44px;
}

.nav-link:hover,
.nav-link:focus {
    background: #F5F5F5;
    color: #1B5E20;
}

.nav-button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

/* Main content */
.main {
    padding: 1.5rem 0;
    flex: 1;
}

.admin-main {
    padding: 2rem 0;
}

/* Cards */
.card {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 16px rgba(27, 94, 32, 0.08);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.card-header {
    padding: 1.5rem 1.5rem 1rem;
    border-bottom: 1px solid #F0F0F0;
}

.card-header h2 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
    color: #1B5E20;
}

.card-header p {
    color: #666;
    font-size: 0.875rem;
    margin: 0;
}

/* Forms */
.form {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

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

.label {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    color: #1B5E20;
}

.label-text {
    flex: 1;
}

.required {
    color: #D32F2F;
    font-weight: 600;
}

.optional {
    color: #666;
    font-size: 0.75rem;
    font-weight: 400;
}

/* Input styles */
.input,
.textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid #E0E0E0;
    border-radius: 0.75rem;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.4;
    background: white;
    color: #333;
    transition: all 0.2s ease;
    -webkit-appearance: none;
    appearance: none;
    min-height: 48px;
}

.input:focus,
.textarea:focus {
    outline: none;
    border-color: #1B5E20;
    box-shadow: 0 0 0 3px rgba(27, 94, 32, 0.1);
}

.input:invalid:not(:focus):not(:placeholder-shown) {
    border-color: #D32F2F;
}

.textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.5;
}

.textarea.large {
    min-height: 200px;
}

/* Help text */
.help-text {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: #666;
    line-height: 1.4;
}

.char-counter {
    margin-top: 0.5rem;
    text-align: right;
    font-size: 0.75rem;
    color: #666;
}

/* Error messages */
.error-message {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: #D32F2F;
    font-weight: 500;
    min-height: 1rem;
}

/* Buttons */
.btn-primary {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #1B5E20 0%, #2E7D32 100%);
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 56px;
    box-shadow: 0 2px 8px rgba(27, 94, 32, 0.2);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #2E7D32 0%, #388E3C 100%);
    box-shadow: 0 4px 12px rgba(27, 94, 32, 0.3);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(27, 94, 32, 0.2);
}

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

.btn-primary.large {
    font-size: 1.125rem;
    padding: 1.25rem 1.5rem;
    min-height: 64px;
}

.btn-icon {
    flex-shrink: 0;
}

.btn-text {
    flex: 1;
    text-align: center;
}

/* Form actions */
.form-actions {
    margin-top: 2rem;
}

.send-info {
    background: #E8F5E9;
    border: 1px solid #C8E6C9;
    border-radius: 0.75rem;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.send-info h4 {
    color: #1B5E20;
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.75rem 0;
}

.send-steps {
    margin: 0;
    padding-left: 1.25rem;
    color: #2E7D32;
}

.send-steps li {
    margin-bottom: 0.5rem;
    line-height: 1.4;
    font-size: 0.875rem;
}

.send-steps li:last-child {
    margin-bottom: 0;
}

.help-note {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.75rem;
    background: #F5F5F5;
    border-radius: 0.5rem;
    color: #666;
    font-size: 0.875rem;
    line-height: 1.4;
}

.help-note svg {
    flex-shrink: 0;
}

/* Modal styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 1rem;
    backdrop-filter: blur(4px);
}

.modal[aria-hidden="true"] {
    display: none;
}

.modal-content {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    max-width: 400px;
    width: 100%;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    animation: modalSlide 0.3s ease-out;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-icon {
    margin-bottom: 1.5rem;
}

.modal-content h3 {
    color: #1B5E20;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.modal-content p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.modal-steps {
    background: #F8F9FA;
    border-radius: 0.75rem;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    text-align: left;
}

.modal-steps strong {
    color: #1B5E20;
    font-weight: 600;
    display: block;
    margin-bottom: 0.75rem;
}

.modal-steps ol {
    margin: 0;
    padding-left: 1.25rem;
    color: #2E7D32;
}

.modal-steps li {
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    line-height: 1.4;
}

.modal-steps li:last-child {
    margin-bottom: 0;
}

.btn-secondary {
    background: #F5F5F5;
    color: #1B5E20;
    border: 2px solid #E0E0E0;
    border-radius: 0.75rem;
    padding: 0.875rem 1.5rem;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 48px;
}

.btn-secondary:hover {
    background: #EEEEEE;
    border-color: #BDBDBD;
}

/* Analytics Modal Styles */
.analytics-modal {
    max-width: 800px;
    width: 95%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #E0E0E0;
}

.close-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.5rem;
    color: #666;
    transition: all 0.2s ease;
}

.close-btn:hover {
    background: #F5F5F5;
    color: #1B5E20;
}

.analytics-loading {
    text-align: center;
    padding: 2rem;
}

.analytics-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.analytics-card {
    background: #F8F9FA;
    border: 1px solid #E0E0E0;
    border-radius: 0.75rem;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.card-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: #1B5E20;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.card-info {
    flex: 1;
    min-width: 0;
}

.card-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1B5E20;
    line-height: 1;
    margin-bottom: 0.25rem;
}

.card-label {
    color: #666;
    font-size: 0.875rem;
    font-weight: 500;
}

.recent-activity h4 {
    color: #1B5E20;
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.sends-list {
    max-height: 300px;
    overflow-y: auto;
}

.send-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    background: #F8F9FA;
    border: 1px solid #E0E0E0;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
}

.send-item:last-child {
    margin-bottom: 0;
}

.send-info {
    flex: 1;
    min-width: 0;
}

.send-name {
    font-weight: 600;
    color: #1B5E20;
    font-size: 0.875rem;
    margin-bottom: 0.125rem;
}

.send-details {
    color: #666;
    font-size: 0.75rem;
}

.send-time {
    color: #999;
    font-size: 0.75rem;
    white-space: nowrap;
}

.no-data {
    text-align: center;
    color: #666;
    font-style: italic;
    padding: 2rem;
}

.analytics-error {
    text-align: center;
    color: #D32F2F;
    padding: 2rem;
}

.analytics-error p {
    margin: 0;
    color: inherit;
}

.sticky-actions {
    position: sticky;
    bottom: 1rem;
    background: white;
    padding: 1rem;
    margin: 2rem -1rem -1rem;
    border-top: 1px solid #E0E0E0;
    border-radius: 0 0 1rem 1rem;
}

/* Admin form sections */
.form-section {
    background: white;
    border-radius: 1rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.section-header {
    padding: 1.5rem 1.5rem 1rem;
    background: #F8F9FA;
    border-bottom: 1px solid #E0E0E0;
}

.section-header h2 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
    color: #1B5E20;
}

.section-header p {
    color: #666;
    font-size: 0.875rem;
    margin: 0;
}

.admin-form .form-group {
    padding: 0 1.5rem;
}

.admin-form .form-actions {
    padding: 0 1.5rem 1.5rem;
}

/* Status messages */
.status-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 0.75rem;
    font-weight: 500;
    text-align: center;
    min-height: 1rem;
}

.status-message.success {
    background: #E8F5E9;
    color: #2E7D32;
    border: 1px solid #C8E6C9;
}

.status-message.error {
    background: #FFEBEE;
    color: #D32F2F;
    border: 1px solid #FFCDD2;
}

.status-message.loading {
    background: #E3F2FD;
    color: #1976D2;
    border: 1px solid #BBDEFB;
}

/* Email preview styles */
.email-preview {
    padding: 1.5rem;
    background: #F8F9FA;
    border-radius: 0.75rem;
    margin: 1.5rem;
    border: 1px solid #E0E0E0;
}

.email-field {
    margin-bottom: 1rem;
}

.email-field:last-child {
    margin-bottom: 0;
}

.email-field strong {
    color: #1B5E20;
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
}

.email-body {
    background: white;
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid #E0E0E0;
    white-space: pre-wrap;
    line-height: 1.6;
    color: #333;
    font-family: inherit;
    font-size: 0.875rem;
}

/* Recipients list styles */
.recipients-list {
    padding: 1.5rem;
}

.recipient-item {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    background: #F8F9FA;
    border-radius: 0.5rem;
    margin-bottom: 0.75rem;
    border: 1px solid #E0E0E0;
}

.recipient-item:last-child {
    margin-bottom: 0;
}

.recipient-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: #1B5E20;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.75rem;
}

.recipient-info {
    flex: 1;
    min-width: 0;
}

.recipient-name {
    font-weight: 600;
    color: #1B5E20;
    font-size: 0.875rem;
    margin-bottom: 0.125rem;
}

.recipient-email {
    color: #666;
    font-size: 0.75rem;
    word-break: break-all;
}

.loading-text {
    text-align: center;
    color: #666;
    font-style: italic;
    padding: 1rem;
}

/* Info sections */
.info-section {
    margin-top: 2rem;
}

.info-card {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 8px rgba(27, 94, 32, 0.05);
}

.info-card h3 {
    color: #1B5E20;
    margin-bottom: 1rem;
}

.steps {
    padding-left: 1.25rem;
    color: #2E7D32;
}

.steps li {
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

/* Footer */
.footer {
    background: #1B5E20;
    color: white;
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 2rem;
}

.footer p {
    margin: 0;
    font-size: 0.875rem;
    opacity: 0.8;
    color: inherit;
}

/* Loading indicator */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.loading[aria-hidden="true"] {
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #E0E0E0;
    border-top: 4px solid #1B5E20;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading p {
    color: #666;
    font-size: 0.875rem;
    margin: 0;
}

/* Admin body styling */
.admin-body {
    background: #F5F5F5;
}

/* Responsive design - Tablet and up */
@media (min-width: 768px) {
    .container {
        max-width: 600px;
        padding: 0 2rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .title {
        font-size: 1.75rem;
    }
    
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
    
    .main {
        padding: 2rem 0;
    }
    
    .card-header {
        padding: 2rem 2rem 1.5rem;
    }
    
    .form {
        padding: 2rem;
    }
    
    .admin-form .form-group {
        padding: 0 2rem;
    }
    
    .admin-form .form-actions {
        padding: 0 2rem 2rem;
    }
    
    .sticky-actions {
        position: static;
        margin: 2rem -2rem -2rem;
    }
}

/* Responsive design - Desktop and up */
@media (min-width: 1024px) {
    .container {
        max-width: 800px;
    }
    
    .form-row {
        gap: 1.5rem;
    }
    
    .btn-primary {
        max-width: 300px;
        margin: 0 auto;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 2dppx) {
    .logo svg,
    .btn-icon,
    .nav-link svg {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Print styles */
@media print {
    .header,
    .footer,
    .admin-nav,
    .form-actions,
    .loading {
        display: none;
    }
    
    .main {
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .spinner {
        animation: none;
        border-top-color: transparent;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .input,
    .textarea {
        border-width: 3px;
    }
    
    .btn-primary {
        border: 2px solid transparent;
    }
    
    .btn-primary:focus {
        border-color: currentColor;
    }
}

/* Dark mode considerations */
@media (prefers-color-scheme: dark) {
    /* Keep light theme for better readability and Northern Ireland branding */
    /* But ensure good contrast for system UI elements */
    
    input[type="text"],
    input[type="email"],
    input[type="password"],
    textarea {
        color-scheme: light;
    }
}

/* Focus management for keyboard navigation */
.input:focus,
.textarea:focus,
.btn-primary:focus,
.nav-link:focus {
    outline: 2px solid #1B5E20;
    outline-offset: 2px;
}

/* Touch target sizing for mobile */
@media (pointer: coarse) {
    .input,
    .textarea,
    .btn-primary,
    .nav-link {
        min-height: 48px;
    }
    
    .label {
        min-height: 24px;
        margin-bottom: 0.75rem;
    }
}