/* ===== CSS Variables & Design Tokens ===== */
:root {
    /* Colors */
    --primary-hue: 250;
    --primary: hsl(var(--primary-hue), 100%, 65%);
    --primary-dark: hsl(var(--primary-hue), 100%, 50%);
    --primary-light: hsl(var(--primary-hue), 100%, 80%);

    --accent-hue: 340;
    --accent: hsl(var(--accent-hue), 100%, 65%);

    --success: hsl(145, 80%, 50%);
    --warning: hsl(45, 100%, 55%);
    --error: hsl(0, 85%, 60%);

    /* Dark theme colors */
    --bg-primary: hsl(230, 25%, 8%);
    --bg-secondary: hsl(230, 20%, 12%);
    --bg-tertiary: hsl(230, 20%, 16%);

    --text-primary: hsl(0, 0%, 95%);
    --text-secondary: hsl(0, 0%, 70%);
    --text-muted: hsl(0, 0%, 50%);

    /* Glass effect */
    --glass-bg: hsla(230, 20%, 15%, 0.7);
    --glass-border: hsla(0, 0%, 100%, 0.1);
    --glass-shadow: 0 8px 32px hsla(0, 0%, 0%, 0.3);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== App Container ===== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
}

/* ===== Background Decorations ===== */
.bg-decoration {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent), var(--primary-light));
    bottom: -100px;
    left: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-light), var(--success));
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -30px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }

    75% {
        transform: translate(-30px, -20px) scale(1.02);
    }
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-xl) var(--space-md);
    gap: var(--space-lg);
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

/* ===== Header ===== */
.header {
    text-align: center;
    margin-bottom: var(--space-md);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.logo-icon {
    font-size: 2.5rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
}

/* ===== Status Indicator ===== */
.status-container {
    width: 100%;
}

.status-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: background var(--transition-normal);
}

.status-indicator.ready .status-dot {
    background: var(--text-muted);
}

.status-indicator.connecting .status-dot {
    background: var(--warning);
    animation: pulse 1s infinite;
}

.status-indicator.waiting .status-dot {
    background: var(--success);
    animation: pulse 2s infinite;
}

.status-indicator.received .status-dot {
    background: var(--success);
}

.status-indicator.error .status-dot {
    background: var(--error);
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.status-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== Glass Card ===== */
.glass-card {
    width: 100%;
    padding: var(--space-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    box-shadow: var(--glass-shadow);
}

/* ===== Alias Card ===== */
.alias-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.alias-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.alias-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.expires-badge {
    font-size: 0.75rem;
    padding: var(--space-xs) var(--space-sm);
    background: hsla(var(--primary-hue), 100%, 65%, 0.2);
    color: var(--primary-light);
    border-radius: var(--radius-sm);
}

.alias-display {
    padding: var(--space-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px dashed var(--glass-border);
    text-align: center;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.alias-placeholder {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.alias-email {
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 1rem;
    color: var(--primary-light);
    word-break: break-all;
    line-height: 1.5;
}

.alias-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex: 1;
    min-width: 120px;
}

.btn:hover {
    transform: translateY(-2px);
}

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

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px hsla(var(--primary-hue), 100%, 50%, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px hsla(var(--primary-hue), 100%, 50%, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), hsl(var(--accent-hue), 100%, 50%));
    color: white;
    box-shadow: 0 4px 15px hsla(var(--accent-hue), 100%, 50%, 0.3);
}

.btn-icon {
    font-size: 1.125rem;
}

/* ===== Email Card ===== */
.email-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    animation: slideUp 0.4s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.email-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--success);
}

.email-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.email-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
}

.email-from,
.email-subject {
    display: flex;
    gap: var(--space-sm);
}

.email-meta .label {
    font-size: 0.75rem;
    color: var(--text-muted);
    min-width: 60px;
}

.email-meta .value {
    font-size: 0.875rem;
    color: var(--text-primary);
    word-break: break-all;
}

.email-body {
    padding: var(--space-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary);
    font-size: 0.9375rem;
    line-height: 1.8;
    white-space: pre-wrap;
    max-height: 300px;
    overflow-y: auto;
}

.email-actions {
    display: flex;
    justify-content: center;
}

/* ===== Waiting Container ===== */
.waiting-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-xl);
}

.waiting-animation {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.mail-icon {
    font-size: 3rem;
    animation: bounce 1.5s ease-in-out infinite;
}

.waiting-dots {
    display: flex;
    gap: var(--space-xs);
}

.waiting-dots span {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: dotBounce 1.4s ease-in-out infinite;
}

.waiting-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.waiting-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes dotBounce {

    0%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-10px);
    }
}

.waiting-text {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
}

.waiting-hint {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-align: center;
}

/* ===== Demo Notice ===== */
.demo-notice {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
    border-color: hsla(145, 80%, 50%, 0.3);
    background: hsla(145, 30%, 15%, 0.5);
}

.notice-icon {
    font-size: 1.5rem;
}

.notice-content {
    flex: 1;
}

.notice-content h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--success);
    margin-bottom: var(--space-xs);
}

.notice-content p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.status-dot.ready {
    --status-color: var(--success);
    background-color: var(--status-color);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.4);
}

/* ===== Config Card ===== */
.config-card {
    border-color: hsla(var(--primary-hue), 100%, 65%, 0.3);
}

.config-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--primary-light);
}

.config-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.step {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.step-num {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.step-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.step-text code {
    background: var(--bg-tertiary);
    padding: 0.1em 0.4em;
    border-radius: 4px;
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 0.8em;
    color: var(--primary-light);
}

/* ===== Stats Container ===== */
.stats-container {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    padding: var(--space-md);
    font-size: 0.75rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.stat-icon {
    font-size: 0.875rem;
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: var(--space-lg);
    color: var(--text-muted);
    font-size: 0.8125rem;
    position: relative;
    z-index: 1;
}

.footer-hint {
    font-size: 0.75rem;
    margin-top: var(--space-xs);
    opacity: 0.7;
}

/* ===== Toast Notification ===== */
.toast {
    position: fixed;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    box-shadow: var(--glass-shadow);
    opacity: 0;
    transition: all var(--transition-normal);
    z-index: 100;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    border-color: var(--success);
    background: hsla(145, 80%, 20%, 0.9);
}

.toast.error {
    border-color: var(--error);
    background: hsla(0, 80%, 20%, 0.9);
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
    .main-content {
        padding: var(--space-md);
    }

    .glass-card {
        padding: var(--space-lg);
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .alias-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .stats-container {
        flex-direction: column;
        align-items: center;
    }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}