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

:root {
    --color-ivory: #F5F5F1;
    --color-white: #ffffff;
    --color-terracotta: #D27D56;
    --color-olive: #6B705C;
    --color-text-primary: #3d3d3d;
    --color-text-secondary: #5a5a5a;
    --color-text-muted: #8a8a8a;
    --color-input-bg: #F9F9F7;
    --color-error: #D89B8C;
    --shadow-soft: 0 20px 50px rgba(107, 112, 92, 0.1);
    --shadow-hover: 0 25px 60px rgba(107, 112, 92, 0.15);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--color-text-primary);
    overflow-x: hidden;
}

.background {
    min-height: 100vh;
    background-color: var(--color-ivory);
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(210, 125, 86, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(107, 112, 92, 0.03) 0%, transparent 50%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23999999' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    position: relative;
}

.background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(0, 0, 0, 0.02) 100%);
    pointer-events: none;
}

.auth-container {
    position: relative;
    width: 100%;
    max-width: 440px;
    perspective: 1000px;
    min-height: 600px;
}

.auth-card {
    background: var(--color-white);
    border-radius: 24px;
    padding: 56px 48px 48px;
    box-shadow: var(--shadow-soft);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
    position: absolute;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1;
}

.auth-card:hover {
    box-shadow: var(--shadow-hover);
}

.auth-card.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.95);
    z-index: 0;
}

.auth-card.active {
    opacity: 1;
    pointer-events: all;
    transform: scale(1);
    z-index: 2;
}

@keyframes cardFlip {
    0% {
        opacity: 0;
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: rotateY(0deg) scale(1);
    }
}

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

.logo-image {
    width: 80px;
    height: 80px;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.logo-image:hover {
    transform: scale(1.05);
}

.title {
    font-family: 'Lora', Georgia, serif;
    font-size: 28px;
    font-weight: 400;
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: 40px;
    line-height: 1.3;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.form-group {
    position: relative;
}

.form-group label {
    display: block;
    font-family: 'Lora', Georgia, serif;
    font-style: italic;
    font-size: 15px;
    color: var(--color-text-secondary);
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.forgot-link {
    font-size: 13px;
    color: var(--color-olive);
    text-decoration: none;
    transition: color 0.3s ease;
}

.forgot-link:hover {
    color: var(--color-terracotta);
}

.form-input {
    width: 100%;
    padding: 16px 20px;
    background: var(--color-input-bg);
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 12px;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    color: var(--color-text-primary);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
}

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

.form-input:focus {
    background: var(--color-white);
    border-bottom-color: var(--color-terracotta);
    box-shadow: 0 4px 12px rgba(210, 125, 86, 0.1);
    transform: translateY(-2px);
}

.form-input.error {
    background: #FFF5F3;
    border-bottom-color: var(--color-error);
}

.password-wrapper {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease;
}

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

.eye-icon {
    transition: all 0.3s ease;
}

.password-toggle.active .eye-icon {
    color: var(--color-olive);
}

.error-message {
    display: block;
    font-size: 13px;
    color: var(--color-error);
    margin-top: 8px;
    min-height: 18px;
    font-style: italic;
    opacity: 0;
    transform: translateY(-4px);
    transition: all 0.3s ease;
}

.error-message.show {
    opacity: 1;
    transform: translateY(0);
}

.checkbox-group {
    margin-top: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.checkbox-input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkbox-custom {
    position: relative;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--color-text-muted);
    margin-right: 12px;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.checkbox-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-olive);
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.checkbox-input:checked + .checkbox-custom {
    border-color: var(--color-olive);
}

.checkbox-input:checked + .checkbox-custom::after {
    transform: translate(-50%, -50%) scale(1);
}

.checkbox-text {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.btn-primary {
    width: 100%;
    padding: 18px 32px;
    background: var(--color-olive);
    color: var(--color-white);
    border: none;
    border-radius: 50px;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(107, 112, 92, 0.25);
    margin-top: 16px;
}

.btn-primary:hover {
    background: #5a5f4d;
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 24px rgba(107, 112, 92, 0.35);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 2px 8px rgba(107, 112, 92, 0.2) inset;
}

.btn-secondary {
    background: var(--color-terracotta);
    box-shadow: 0 4px 16px rgba(210, 125, 86, 0.25);
}

.btn-secondary:hover {
    background: #c46d46;
    box-shadow: 0 8px 24px rgba(210, 125, 86, 0.35);
}

.btn-secondary:active {
    box-shadow: 0 2px 8px rgba(210, 125, 86, 0.2) inset;
}

.switch-form {
    margin-top: 32px;
    text-align: center;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.switch-form a {
    color: var(--color-olive);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.switch-form a:hover {
    color: var(--color-terracotta);
}

/* Responsive */
@media (max-width: 520px) {
    .auth-card {
        padding: 40px 32px 32px;
        border-radius: 20px;
    }
    
    .title {
        font-size: 24px;
    }
    
    .form-input {
        padding: 14px 16px;
        font-size: 15px;
    }
}

/* Verify Email Styles */
.verify-state {
    text-align: center;
    padding: 20px 0;
}

.spinner {
    width: 64px;
    height: 64px;
    border: 4px solid var(--color-input-bg);
    border-top-color: var(--color-olive);
    border-radius: 50%;
    margin: 0 auto 30px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.success-icon {
    color: #6B9B6D;
    margin-bottom: 20px;
}

.success-icon svg {
    stroke: currentColor;
    animation: checkmark 0.5s ease-in-out;
}

@keyframes checkmark {
    0% {
        stroke-dasharray: 100;
        stroke-dashoffset: 100;
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        stroke-dasharray: 100;
        stroke-dashoffset: 0;
        opacity: 1;
        transform: scale(1);
    }
}

.error-icon {
    color: var(--color-error);
    margin-bottom: 20px;
}

.error-icon svg {
    stroke: currentColor;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-10px);
    }
    75% {
        transform: translateX(10px);
    }
}

.verify-state .title {
    margin-bottom: 15px;
}

.verify-state .subtitle {
    color: var(--color-text-secondary);
    font-size: 15px;
    line-height: 1.6;
    max-width: 400px;
    margin: 0 auto 30px;
}

.verify-state .btn {
    margin-top: 10px;
    display: inline-block;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}