:root {
    /* Light Mode Variables */
    --primary-color: #4361ee;
    --primary-light: #eaefff;
    --secondary-color: #6c757d;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --info-color: #3498db;
    --dark-color: #343a40;
    --light-color: #f8f9fa;
    --border-color: #e1e5eb;
    --text-color: #333;
    --text-muted: #6c757d;
    --bg-color: #f5f8fe;
    --card-bg: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --gradient-start: #f5f8fe;
    --gradient-end: #e9effd;
    --pattern-color: rgba(67, 97, 238, 0.03);
    --logo-shadow: rgba(67, 97, 238, 0.3);
    --login-btn-hover: #3654d9;
    --feature-shadow: rgba(0, 0, 0, 0.05);
    --input-bg: #ffffff;
    --input-border: #e1e5eb;
    --input-focus-border: #4361ee;
    --input-placeholder: #a0a5ab;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    
    /* Transitions */
    --transition-speed: 0.3s;
}

[data-theme="dark"] {
    --primary-color: #6c8cff;
    --primary-light: #1a2240;
    --secondary-color: #a1a8af;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --info-color: #3498db;
    --dark-color: #f8f9fa;
    --light-color: #2a2a2a;
    --border-color: #3a3a3a;
    --text-color: #f0f0f0;
    --text-muted: #c5c5c5;
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --gradient-start: #121212;
    --gradient-end: #1e1e1e;
    --pattern-color: rgba(108, 140, 255, 0.05);
    --logo-shadow: rgba(108, 140, 255, 0.3);
    --login-btn-hover: #5379ff;
    --feature-shadow: rgba(0, 0, 0, 0.3);
    --input-bg: #2a2a2a;
    --input-border: #3a3a3a;
    --input-focus-border: #6c8cff;
    --input-placeholder: #6c757d;
}

/* Base Styles */
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

/* Animated Background */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    transition: background var(--transition-speed);
}

.bg-pattern {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 10% 20%, var(--pattern-color) 0%, transparent 20%),
        radial-gradient(circle at 90% 30%, var(--pattern-color) 0%, transparent 20%),
        radial-gradient(circle at 30% 70%, var(--pattern-color) 0%, transparent 20%),
        radial-gradient(circle at 80% 90%, var(--pattern-color) 0%, transparent 20%);
    animation: patternFloat 15s ease-in-out infinite alternate;
    transition: background-image var(--transition-speed);
}

@keyframes patternFloat {
    0% {
        transform: translateY(-1%) translateX(-1%);
    }
    100% {
        transform: translateY(1%) translateX(1%);
    }
}

/* Floating Objects */
.floating-objects {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-object {
    position: absolute;
    opacity: 0.5;
    z-index: -1;
    transition: color var(--transition-speed);
}

.object-1 {
    top: 15%;
    left: 10%;
    font-size: 4rem;
    color: var(--primary-color);
    animation: float 20s ease-in-out infinite;
}

.object-2 {
    top: 75%;
    left: 85%;
    font-size: 3rem;
    color: var(--success-color);
    animation: float 18s ease-in-out infinite 2s;
}

.object-3 {
    top: 25%;
    left: 90%;
    font-size: 3.5rem;
    color: var(--warning-color);
    animation: float 22s ease-in-out infinite 1s;
}

.object-4 {
    top: 80%;
    left: 15%;
    font-size: 3rem;
    color: var(--info-color);
    animation: float 25s ease-in-out infinite 3s;
}

.object-5 {
    top: 45%;
    left: 5%;
    font-size: 2.5rem;
    color: var(--danger-color);
    animation: float 19s ease-in-out infinite 2s;
}

.object-6 {
    top: 40%;
    left: 95%;
    font-size: 2.5rem;
    color: var(--primary-color);
    animation: float 21s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0) rotate(0deg);
    }
    25% {
        transform: translateY(-25px) translateX(15px) rotate(5deg);
    }
    50% {
        transform: translateY(10px) translateX(-20px) rotate(-3deg);
    }
    75% {
        transform: translateY(-15px) translateX(25px) rotate(2deg);
    }
}

/* Main Container */
.container {
    max-width: 1200px;
    width: 90%;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-md);
    z-index: 1;
    margin: 2rem 0;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
}

.theme-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-color);
    padding: 0.5rem;
    border-radius: 50%;
    background-color: var(--card-bg);
    box-shadow: 0 2px 8px var(--shadow-color);
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
}

.theme-toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

/* Logo and Header */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.logo-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.logo-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    border-radius: var(--border-radius-sm);
    color: white;
    font-size: 2rem;
    margin-right: var(--spacing-sm);
    box-shadow: 0 5px 15px var(--logo-shadow);
    animation: pulse 2s infinite;
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed);
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 5px 15px var(--logo-shadow);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 5px 20px var(--logo-shadow);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 5px 15px var(--logo-shadow);
    }
}

.logo-text {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    text-shadow: 0 2px 4px var(--shadow-color);
    transition: color var(--transition-speed);
}

.page-title {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    transition: color var(--transition-speed);
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xl);
    transition: color var(--transition-speed);
    max-width: 600px;
    text-align: center;
}

/* Card Container */
.card {
    width: 100%;
    max-width: 500px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px var(--shadow-color);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-speed);
}

.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--info-color));
}

/* Tabs */
.tabs {
    display: flex;
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.tab {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
    transition: all var(--transition-speed);
}

.tab.active {
    color: var(--primary-color);
}

.tab::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    transform: scaleX(0);
    transition: transform var(--transition-speed);
}

.tab.active::after {
    transform: scaleX(1);
}

/* Form Styles */
.form-section {
    display: none;
}

.form-section.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

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

.form-group {
    margin-bottom: var(--spacing-md);
}

.turnstile-container {
    margin: var(--spacing-md) 0;
    display: flex;
    justify-content: center;
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--dark-color);
    transition: color var(--transition-speed);
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-color);
    font-size: 1.1rem;
    transition: color var(--transition-speed);
}

input, select {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 1px solid var(--input-border);
    border-radius: var(--border-radius-md);
    background-color: var(--input-bg);
    color: var(--text-color);
    font-size: 1rem;
    transition: all var(--transition-speed);
}

input::placeholder {
    color: var(--input-placeholder);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--input-focus-border);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 20px;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 5px 15px var(--logo-shadow);
}

.btn-primary:hover {
    background-color: var(--login-btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--logo-shadow);
}

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

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* Verification Methods */
.verification-methods {
    margin: var(--spacing-md) 0;
}

.method-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.method-option:hover {
    border-color: var(--primary-color);
    background-color: var(--primary-light);
    transform: translateY(-2px);
}

.method-option.selected {
    border-color: var(--primary-color);
    background-color: var(--primary-light);
}

.method-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--primary-light);
    border-radius: 50%;
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: all var(--transition-speed);
}

.method-option:hover .method-icon,
.method-option.selected .method-icon {
    background-color: var(--primary-color);
    color: white;
}

.method-info {
    flex: 1;
}

.method-title {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 2px;
    transition: color var(--transition-speed);
}

.method-description {
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: color var(--transition-speed);
}

/* Verification Code Input */
.code-inputs {
    display: flex;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.code-input {
    flex: 1;
    width: 50px;
    height: 50px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    padding: 0;
    border-radius: var(--border-radius-md);
}

/* Info Box */
.info-box {
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin: var(--spacing-md) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.info-box i {
    margin-top: 2px;
}

.security-tips {
    margin-top: var(--spacing-lg);
}

.security-tips h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
    transition: color var(--transition-speed);
}

.security-tips ul {
    padding-left: var(--spacing-lg);
}

.security-tips li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color var(--transition-speed);
}

/* Navigation Links */
.links {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-top: var(--spacing-md);
}

.link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all var(--transition-speed);
}

.link:hover {
    color: var(--login-btn-hover);
    text-decoration: underline;
}

/* Timeline */
.timeline {
    display: flex;
    justify-content: space-between;
    margin: var(--spacing-md) 0 var(--spacing-lg);
    position: relative;
    width: 100%;
}

.timeline::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--border-color);
    z-index: 1;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--light-color);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
    transition: all var(--transition-speed);
}

.step.active .step-number {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.step.completed .step-number {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.step-title {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    transition: color var(--transition-speed);
}

.step.active .step-title {
    color: var(--primary-color);
    font-weight: 600;
}

.step.completed .step-title {
    color: var(--success-color);
}

/* Tooltip */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: -40px;
    right: 0;
    background-color: var(--card-bg);
    color: var(--text-color);
    padding: 0.5rem 0.8rem;
    border-radius: var(--border-radius-md);
    font-size: 0.85rem;
    white-space: nowrap;
    box-shadow: 0 3px 10px var(--shadow-color);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-speed);
    transform: translateY(10px);
    z-index: 1000;
}

.tooltip:hover::after {
    opacity: 1;
    transform: translateY(0);
}

/* Success/Error Messages */
.message {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    animation: fadeIn 0.5s ease-in-out;
}

.message-success {
    background-color: rgba(46, 204, 113, 0.1);
    color: var(--success-color);
    border-left: 3px solid var(--success-color);
}

.message-error {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--danger-color);
    border-left: 3px solid var(--danger-color);
}

.message i {
    margin-top: 2px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        width: 95%;
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .card {
        padding: var(--spacing-md);
    }

    .verification-methods {
        flex-direction: column;
    }

    .page-title {
        font-size: 1.3rem;
    }

    .page-subtitle {
        font-size: 1rem;
    }

    .code-inputs {
        gap: var(--spacing-xs);
    }

    .code-input {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .logo-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

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

    .theme-toggle {
        top: 10px;
        right: 10px;
    }

    .theme-toggle-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .floating-objects {
        display: none;
    }
}

/* Accessibility Focus Styles */
button:focus, a:focus, input:focus, select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip to main content for screen readers */
.skip-to-content {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip-to-content:focus {
    left: 0;
    top: 0;
    width: auto;
    height: auto;
    padding: 10px;
    background: var(--primary-color);
    color: white;
    z-index: 999;
    font-weight: 600;
}