:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --success-color: #10b981;
    --success-hover: #059669;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --input-focus: rgba(59, 130, 246, 0.2);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-md: 8px;
    --radius-lg: 12px;
    --font-family: 'Outfit', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    background-image: radial-gradient(circle at top right, #e0e7ff, transparent 30%), radial-gradient(circle at bottom left, #dbeafe, transparent 30%);
    min-height: 100vh;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.app-header {
    text-align: center;
    margin-bottom: 2rem;
}

.app-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.card {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
}

#login-section {
    max-width: 450px;
    margin: 0 auto;
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.card-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.form-group label i {
    color: var(--text-muted);
    margin-right: 0.25rem;
}

input[type="email"],
input[type="text"],
input[type="password"],
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: all 0.2s;
    background-color: #fff;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--input-focus);
}

.readonly-input {
    background-color: #f1f5f9 !important;
    color: var(--text-muted);
    cursor: not-allowed;
}

.password-wrapper {
    position: relative;
}

.password-wrapper input {
    padding-right: 3rem;
}

.icon-button {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: color 0.2s;
}

.icon-button:hover {
    color: var(--primary-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background: linear-gradient(to right, var(--primary-color), #2563eb);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: linear-gradient(to right, #2563eb, #1d4ed8);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-success {
    background: linear-gradient(to right, var(--success-color), #059669);
    color: white;
}

.btn-success:hover {
    background: linear-gradient(to right, #059669, #047857);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: linear-gradient(to right, var(--danger-color), #dc2626);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(to right, #dc2626, #b91c1c);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    background: var(--bg-color);
    border-color: var(--text-muted);
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
}

/* Error/Help state */
.error-message {
    background-color: #fef2f2;
    color: var(--danger-color);
    padding: 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-left: 3px solid var(--danger-color);
}

.help-text {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.85rem;
}

.help-text a {
    color: var(--primary-color);
    text-decoration: none;
}

.help-text a:hover {
    text-decoration: underline;
}

/* Utilities */
.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.4s ease-out forwards;
    opacity: 0;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Dashboard Specific UI */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

@media (max-width: 860px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.composer-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.composer-card h3, .recipients-card h3, .progress-card h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-main);
}

.composer-card form {
    display: flex;
    flex-direction: column;
    height: 100%;
    flex: 1;
}

.form-row {
    display: flex;
    gap: 1rem;
}

.half {
    flex: 1;
}

.flex-grow {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

#message-body {
    resize: none;
    flex-grow: 1;
    min-height: 250px;
}

.right-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.recipients-card {
    display: flex;
    flex-direction: column;
}

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

.help-subtext {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    margin-top: -0.5rem;
}

.badge {
    background-color: #eff6ff;
    color: var(--primary-color);
    padding: 0.25rem 0.5rem;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 600;
}

#recipients-input {
    resize: none;
    min-height: 150px;
    font-family: monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Progress Monitor */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-box {
    padding: 1rem;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: 0.25rem;
}

.neutral .stat-value { color: var(--primary-color); }
.success .stat-value { color: var(--success-color); }
.danger .stat-value { color: var(--danger-color); }
.warning .stat-value { color: #f59e0b; }

.progress-bar-container {
    height: 8px;
    background-color: var(--border-color);
    border-radius: 99px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(to right, var(--primary-color), var(--success-color));
    transition: width 0.3s ease;
}

.status-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    font-weight: 500;
}

.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }

.control-buttons {
    display: flex;
    gap: 1rem;
}

.flex-1 {
    flex: 1;
}