/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-blue: #4A90E2;
    --soft-blue: #E8F4FD;
    --light-gray: #F8F9FA;
    --medium-gray: #E9ECEF;
    --dark-gray: #6C757D;
    --text-primary: #2C3E50;
    --text-secondary: #5A6C7D;
    --white: #FFFFFF;
    --success-green: #28A745;
    --warning-orange: #FFA500;
    --error-red: #DC3545;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.15s ease-out;
    --transition-normal: 0.25s ease-out;
    --transition-slow: 0.35s ease-out;
}

/* Base Typography */
body {
    font-family: var(--font-primary);
    background: linear-gradient(135deg, var(--soft-blue) 0%, var(--light-gray) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Accessibility - Screen Reader Only Content */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Container */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-top: var(--spacing-lg);
}

.logo {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.02em;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 400;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Email Generator Section */
.email-generator {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--medium-gray);
}

.email-input-container {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.email-input {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.1rem;
    font-family: var(--font-mono);
    border: 2px solid var(--medium-gray);
    border-radius: var(--radius-lg);
    background: var(--light-gray);
    color: var(--text-primary);
    transition: all var(--transition-normal);
    outline: none;
}

.email-input:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.copy-btn:hover {
    background: #357ABD;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.copy-btn.copied {
    background: var(--success-green);
    animation: pulse 0.6s ease-out;
}

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

.email-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--medium-gray);
}

.refresh-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.refresh-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
}

.refresh-btn:active .refresh-icon {
    animation: spin 0.5s ease-out;
}

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

.email-timer {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.timer-value {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--warning-orange);
}

/* Inbox Section */
.inbox-section {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--medium-gray);
    overflow: hidden;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.inbox-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--medium-gray);
    background: var(--light-gray);
}

.inbox-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.inbox-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.email-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.live-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.live-dot {
    width: 8px;
    height: 8px;
    background: var(--success-green);
    border-radius: 50%;
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

.live-text {
    font-size: 0.8rem;
    color: var(--success-green);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Inbox Container */
.inbox-container {
    flex: 1;
    overflow-y: auto;
    max-height: 1200px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.7;
}

.empty-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.empty-description {
    max-width: 400px;
    margin: 0 auto;
    line-height: 1.5;
}

/* Email List */
.email-list {
    padding: var(--spacing-md) 8px var(--spacing-md) 8px;
}

/* Email Card */
.email-card {
    background: var(--white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    animation: slideIn 0.3s ease-out;
    height: auto;
    overflow: visible;
}

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

.email-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--primary-blue);
}

.email-card.new {
    border-color: var(--success-green);
    box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.1);
}

.email-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.email-from {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.email-time {
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    margin-left: var(--spacing-sm);
}

.email-subject {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.email-preview {
    font-size: 0.9rem;
    color: var(--dark-gray);
    line-height: 1.4;
    opacity: 0.8;
}

/* Email Content (Expanded State) */
.email-content {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--medium-gray);
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: all var(--transition-normal);
    pointer-events: none;
}

.email-card.expanded .email-content {
    max-height: none; /* Allow full height */
    opacity: 1;
    padding-top: var(--spacing-md);
    pointer-events: auto;
}

.email-content iframe {
    width: 100%;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--light-gray);
}

.email-content-text {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-primary);
}

.email-content-html {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: hidden; /* Hide horizontal overflow */
    position: relative;
    padding: var(--spacing-md);
    height: auto;
    max-height: 60vh;
    background: var(--white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--medium-gray);
    display: block;
}

.email-html-inner {
    transform: scale(0.85);
    transform-origin: top left;
    width: 100%; /* No compensation, just 100% */
    box-sizing: border-box;
    overflow-x: hidden;
}

/* Expand/Collapse Indicator */
.email-card::after {
    content: '▼';
    position: absolute;
    right: var(--spacing-lg);
    top: var(--spacing-lg);
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: transform var(--transition-normal);
    opacity: 0.7;
    z-index: 10;
}

.email-card {
    position: relative;
}

.email-card.expanded::after {
    transform: rotate(180deg);
}

/* Ensure email header doesn't overlap with arrow */
.email-header {
    padding-right: var(--spacing-xl);
}

/* Notification */
.notification {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--success-green);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    font-weight: 600;
    z-index: 1000;
    transform: translateX(calc(100% + 20px));
    transition: transform var(--transition-normal);
}

.notification.show {
    transform: translateX(0);
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
}

.footer-text {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .logo {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .email-input-container {
        flex-direction: column;
    }
    
    .copy-btn {
        justify-content: center;
    }
    
    .email-actions {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: center;
    }
    
    .inbox-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .inbox-status {
        justify-content: center;
    }
    
    .email-header {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .email-time {
        margin-left: 0;
    }
    
    .notification {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        transform: translateY(-100%);
    }
    
    .notification.show {
        transform: translateY(0);
    }
    
    .footer-text {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .email-generator,
    .inbox-section {
        padding: var(--spacing-lg) 8px var(--spacing-lg) 8px;
    }
    
    .email-input {
        font-size: 1rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .copy-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .inbox-container {
        max-height: 80vh; /* Increase for small screens */
    }
    .email-content-html {
        max-height: 50vh; /* More space for email content */
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --primary-blue: #0056b3;
        --text-primary: #000000;
        --text-secondary: #333333;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .live-dot {
        animation: none;
        opacity: 1;
    }
}

/* Focus Styles for Keyboard Navigation */
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    body {
        background: white;
    }
    
    .notification,
    .live-indicator,
    .copy-btn,
    .refresh-btn {
        display: none;
    }
}