:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --bg-dark: #0f172a;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    /* Optional cool background gradient */
    background: radial-gradient(circle at top left, #1e1b4b, #0f172a);
}

.glass-panel {
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* --- OVERLAY LOGIN --- */
.overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(15, 23, 42, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.login-box {
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-box h2 {
    margin-bottom: 10px;
}

.login-box p {
    color: var(--text-muted);
    margin-bottom: 25px;
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 15px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.form-group input, .form-group select {
    width: 100%;
    padding: 10px 12px;
    border-radius: 6px;
    border: 1px solid var(--glass-border);
    background: rgba(15, 23, 42, 0.5);
    color: var(--text-main);
    outline: none;
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--primary);
}

.btn {
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
    color: white;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary { background: var(--primary); }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }

.btn-secondary { background: #475569; }
.btn-secondary:hover:not(:disabled) { background: #334155; }

.btn-danger { background: var(--danger); }
.btn-danger:hover:not(:disabled) { background: var(--danger-hover); }

.w-100 { width: 100%; }

.error-msg {
    color: #ef4444;
    margin-top: 15px;
    font-size: 0.85rem;
    min-height: 20px;
}

/* --- DASHBOARD --- */
.api-docs code {
    display: block;
    margin-bottom: 8px;
    white-space: nowrap;
    overflow-x: auto;
    padding: 8px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.1);
}

.dashboard {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.dashboard.hidden {
    display: none;
}

.hidden {
    display: none !important;
}

.mt-2 {
    margin-top: 10px;
}

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

/* Linear Progress Animation */
.linear-progress {
    width: 100%;
    height: 3px;
    background-color: rgba(255, 255, 255, 0.05);
    overflow: hidden;
    position: relative;
    border-radius: 2px;
    margin-top: 10px;
    margin-bottom: 10px;
}

.linear-progress-bar {
    width: 40%;
    height: 100%;
    background-color: var(--primary);
    position: absolute;
    border-radius: 2px;
    animation: loading-linear 1.2s infinite ease-in-out;
}

@keyframes loading-linear {
    0% { left: -40%; }
    100% { left: 100%; }
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.header h1 { font-size: 1.5rem; }
.header p { color: var(--text-muted); font-size: 0.9rem; }

.main-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

.sidebar h3 {
    margin-bottom: 15px;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 10px;
}

.generated-email-box {
    margin-top: 15px;
    padding: 12px;
    background: rgba(0,0,0,0.2);
    border: 1px dashed var(--glass-border);
    border-radius: 6px;
    text-align: center;
    font-family: monospace;
    font-size: 1.1rem;
    word-break: break-all;
    -webkit-user-select: all;
    user-select: all;
}

hr {
    border: none;
    border-top: 1px solid var(--glass-border);
    margin: 20px 0;
}

.api-docs {
    background: rgba(0,0,0,0.3);
    padding: 10px;
    border-radius: 6px;
    font-size: 0.8rem;
}
.api-docs p { margin-bottom: 5px; color: var(--text-muted); }
.api-docs code {
    display: block;
    background: #000;
    padding: 5px;
    border-radius: 4px;
    margin-bottom: 5px;
    color: #10b981;
    word-break: break-all;
}

/* --- INBOX --- */
.inbox-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 10px;
}

.inbox-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
}

.email-item {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 15px;
}

.email-item-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.email-subject {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.email-body {
    background: #fff;
    color: #000;
    padding: 15px;
    border-radius: 6px;
    font-size: 0.9rem;
    overflow-x: auto;
}