/* ============================================
   AUTHENTICATION STYLES
   ============================================ */

.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

/* Animated background elements */
.auth-container::before,
.auth-container::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    pointer-events: none;
}

.auth-container::before {
    width: 400px;
    height: 400px;
    background: white;
    top: -100px;
    left: -100px;
    animation: float 20s ease-in-out infinite;
}

.auth-container::after {
    width: 300px;
    height: 300px;
    background: white;
    bottom: -50px;
    right: -50px;
    animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(30px, 30px) rotate(180deg);
    }
}

/* Auth Form Container */
.auth-form {
    position: absolute;
    width: 100%;
    max-width: 500px;
    background: white;
    border-radius: 20px;
    padding: 50px 40px;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    transform: scale(0.95) translateY(20px);
    pointer-events: none;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

.auth-form.active {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: auto;
    position: relative;
}

/* Form Header */
.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.form-header p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Form Content */
.form-content {
    width: 100%;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group.checkbox {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.form-group.checkbox label {
    margin: 0 0 0 0.5rem;
    font-weight: 500;
    cursor: pointer;
}

.form-group.checkbox input {
    margin: 0;
    width: auto;
    cursor: pointer;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Password Field */
.password-field {
    position: relative;
    display: flex;
    align-items: center;
}

.password-field input {
    flex: 1;
    padding-right: 45px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.eye-icon {
    font-size: 1.2rem;
}

/* Password Strength Indicator */
.password-strength {
    margin-top: 8px;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
}

.strength-bar {
    height: 100%;
    width: 0;
    border-radius: 2px;
    transition: all 0.3s ease;
    background: var(--error-color);
}

.strength-bar.weak {
    width: 33%;
    background: var(--error-color);
}

.strength-bar.medium {
    width: 66%;
    background: var(--warning-color);
}

.strength-bar.strong {
    width: 100%;
    background: var(--success-color);
}

.password-hint {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 6px;
    display: none;
}

.password-hint.show {
    display: block;
}

/* Error Message */
.error-message {
    display: block;
    color: var(--error-color);
    font-size: 0.85rem;
    margin-top: 0.5rem;
    opacity: 0;
    transition: var(--transition);
    max-height: 0;
    overflow: hidden;
}

.error-message.show {
    opacity: 1;
    max-height: 50px;
}

.form-group input.error,
.form-group select.error {
    border-color: var(--error-color);
    background: rgba(239, 68, 68, 0.05);
}

/* Form Divider */
.form-divider {
    display: flex;
    align-items: center;
    margin: 1.5rem 0;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.form-divider::before,
.form-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

/* Form Footer */
.form-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.form-footer p {
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.form-footer a {
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

.form-footer a:hover {
    color: var(--primary-dark);
}

.forgot-password {
    display: block;
    margin-top: 1rem;
    font-weight: 500;
}

/* Success Message */
.success-message {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease-in;
}

.success-content {
    background: white;
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    max-width: 400px;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.4s ease-out;
}

.success-icon {
    font-size: 4rem;
    color: var(--success-color);
    margin-bottom: 1rem;
    display: inline-block;
    animation: scaleIn 0.5s ease-out;
}

.success-content h2 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.75rem;
}

.success-content p {
    color: var(--text-secondary);
    font-size: 1rem;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.5);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Input Focus States */
input:invalid:not(:placeholder-shown) {
    border-color: var(--error-color);
}

input:valid:not(:placeholder-shown) {
    border-color: var(--success-color);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .auth-form {
        width: calc(100% - 40px);
        padding: 40px 30px;
        max-width: 100%;
    }

    .form-header h1 {
        font-size: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .form-group {
        margin-bottom: 1.2rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 11px 20px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .auth-form {
        padding: 30px 20px;
        border-radius: 16px;
    }

    .form-header h1 {
        font-size: 1.75rem;
    }

    .form-header p {
        font-size: 0.9rem;
    }

    .form-content {
        font-size: 0.95rem;
    }

    .form-group label {
        font-size: 0.9rem;
    }

    input,
    textarea,
    select {
        padding: 10px 14px;
        font-size: 16px;
    }

    .form-footer {
        margin-top: 1.5rem;
    }

    .form-footer p {
        font-size: 0.9rem;
    }
}