/* Modern Login Styles - Dark Theme */
:root {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-surface-elevated: #334155;
    --color-border: #475569;
    --color-border-subtle: #334155;
    --color-text: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-text-subtle: #64748b;
    --color-primary: #14b8a6;
    --color-primary-hover: #0d9488;
    --color-primary-glow: rgba(20, 184, 166, 0.3);
    --color-danger: #ef4444;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.3), 0 4px 6px -4px rgba(0,0,0,0.1);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--color-bg) 0%, #1a1a2e 50%, #16213e 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    -webkit-font-smoothing: antialiased;
}

.login-container {
    background: var(--color-surface);
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg), 0 0 60px rgba(20, 184, 166, 0.1);
    border: 1px solid var(--color-border-subtle);
    width: 100%;
    max-width: 420px;
    animation: slideIn 0.4s ease;
}

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

.logo-link {
    display: block;
    text-align: center;
    margin-bottom: 32px;
    text-decoration: none;
}

.logo-title {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary) 0%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.error-messages {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 24px;
}

.error-messages ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.error-messages li {
    color: var(--color-danger);
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text);
    font-size: 14px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 16px;
    background: var(--color-surface-elevated);
    color: var(--color-text);
    transition: all 0.2s ease;
}

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

.form-input::placeholder {
    color: var(--color-text-subtle);
}

.login-button {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: var(--color-bg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
    margin-top: 8px;
}

.login-button:hover {
    background: linear-gradient(135deg, var(--color-primary-hover) 0%, #0b796f 100%);
    box-shadow: 0 6px 20px rgba(20, 184, 166, 0.5);
    transform: translateY(-1px);
}

.login-button:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border-subtle);
    color: var(--color-text-muted);
    font-size: 14px;
}

.login-footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.login-footer a:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

.success-message {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 24px;
    color: #10b981;
    font-size: 14px;
    text-align: center;
}

.form-hint {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--color-text-subtle);
}