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

:root {
    --primary-color: #e97fdb;
    --primary-hover: #5855eb;
    --secondary-color: #ec4899;
    --background: #fafafa;
    --background-pink: #fce7f3;
    --surface: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border: #e5e7eb;
    --focus: #3b82f6;
    --error: #ef4444;
    --success: #10b981;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    line-height: 1.6;
    transition: background 0.3s ease;
}

body.pink-theme {
    background: linear-gradient(135deg, #fce7f3 0%, #fbcfe8 100%);
}

.container {
    background: var(--surface);
    border-radius: 16px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    max-width: 440px;
    width: 100%;
    padding: 40px 32px;
    position: relative;
    overflow: hidden;
}

.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.logo {
    text-align: center;
    margin-bottom: 32px;
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.logo p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 500;
}

.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s ease;
    background: var(--surface);
    color: var(--text-primary);
}

input[type="email"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: var(--focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    transform: translateY(-1px);
}

input[type="email"]:hover,
input[type="password"]:hover {
    border-color: var(--primary-color);
}

.password-container {
    position: relative;
}

.show-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.show-password:hover {
    color: var(--primary-color);
}

.show-password:focus {
    outline: 2px solid var(--focus);
    outline-offset: 2px;
}

.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
}

.remember-me input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.remember-me label {
    margin: 0;
    font-weight: 400;
    font-size: 0.9rem;
    cursor: pointer;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.forgot-password:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.forgot-password:focus {
    outline: 2px solid var(--focus);
    outline-offset: 2px;
    border-radius: 4px;
}

.login-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border: none;
    padding: 16px;
    border-radius: 8px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 24px;
    letter-spacing: 0.025em;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

.login-btn:focus {
    outline: 3px solid rgba(99, 102, 241, 0.4);
    outline-offset: 2px;
}

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

.divider {
    text-align: center;
    margin: 24px 0;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border);
}

.divider span {
    background: var(--surface);
    padding: 0 16px;
    font-weight: 500;
}

.signup-link {
    text-align: center;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.signup-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

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

.signup-link a:focus {
    outline: 2px solid var(--focus);
    outline-offset: 2px;
    border-radius: 4px;
}

.accessibility-note {
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 6px;
    padding: 12px;
    margin-top: 20px;
    font-size: 0.85rem;
    color: #0369a1;
    text-align: center;
}

/* Accessibility Button */
.accessibility-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.accessibility-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.accessibility-button:focus {
    outline: 3px solid rgba(255, 255, 255, 0.8);
    outline-offset: 3px;
}

.accessibility-button.active {
    background: linear-gradient(135deg, var(--success), #059669);
    animation: pulse 2s infinite;
}

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

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

/* Accessibility Panel */
.accessibility-panel {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 300px;
    background: var(--surface);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    padding: 20px;
    z-index: 999;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    pointer-events: none;
    transition: all 0.3s ease;
}

.accessibility-panel.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: all;
}

.accessibility-panel h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 15px;
    text-align: center;
}

.accessibility-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

.accessibility-option:last-child {
    border-bottom: none;
}

.accessibility-option label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0;
}

.toggle-switch {
    position: relative;
    width: 50px;
    height: 26px;
    background: var(--border);
    border-radius: 13px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.toggle-switch.active {
    background: var(--primary-color);
}

.toggle-switch::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    transition: transform 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch.active::before {
    transform: translateX(24px);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Reading indicator */
.reading-highlight {
    background-color: rgba(99, 102, 241, 0.2) !important;
    border-radius: 4px;
    padding: 2px 4px;
    transition: background-color 0.3s ease;
}

@media (max-width: 480px) {
    .container {
        padding: 28px 20px;
        margin: 10px;
    }

    .logo h1 {
        font-size: 2.2rem;
    }

    .remember-forgot {
        flex-direction: column;
        align-items: flex-start;
    }

    .accessibility-panel {
        width: calc(100vw - 40px);
        right: 20px;
        left: 20px;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {

    input[type="email"],
    input[type="password"] {
        border-width: 3px;
    }

    .login-btn {
        border: 2px solid var(--text-primary);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}