/* Theme variables */
:root {
    --color-bg-gradient-start: hsl(199, 89%, 48%, 0.05);
    --color-bg-gradient-mid: hsl(210, 40%, 98%);
    --color-bg-gradient-end: hsl(222, 47%, 11%, 0.05);
    --color-text: hsl(222, 47%, 11%);
    --color-subtitle: hsl(215, 16%, 47%);
    --color-primary: hsl(199, 89%, 48%);
    --color-primary-hover: hsl(199, 89%, 38%);
    --color-card-border: hsl(214, 32%, 91%);
    --color-card-bg: hsl(0, 0%, 100%);
    --color-shadow: rgba(0, 0, 0, 0.1);
    --color-input-border: hsl(214, 32%, 91%);
    --color-input-bg: #fff;
    --color-input-icon: hsl(215, 16%, 47%);
    --color-btn-bg: hsl(222, 47%, 11%);
    --color-btn-bg-hover: hsl(222, 47%, 9%);
    --color-btn-text: hsl(210, 40%, 98%);
    --color-toast-border: hsl(214, 32%, 91%);
    --color-toast-bg: #fff;
    --color-toast-error: hsl(0, 84%, 60%);
    --color-toast-error-bg: hsl(0, 84%, 60%, 0.05);
    --color-toast-success: hsl(120, 50%, 50%);
    --color-toast-success-bg: hsl(120, 50%, 50%, 0.05);
}

[data-theme='dark'] {
    --color-bg-gradient-start: hsl(222, 47%, 11%, 0.8);
    --color-bg-gradient-mid: hsl(222, 47%, 13%);
    --color-bg-gradient-end: hsl(199, 89%, 48%, 0.05);
    --color-text: hsl(210, 40%, 98%);
    --color-subtitle: hsl(215, 16%, 67%);
    --color-primary: hsl(199, 89%, 58%);
    --color-primary-hover: hsl(199, 89%, 68%);
    --color-card-border: hsl(215 16% 40%);
    --color-card-bg: hsl(224 40% 18%);
    --color-shadow: rgba(0, 0, 0, 0.4);
    --color-input-border: hsl(215 16% 40%);
    --color-input-bg: hsl(222, 47%, 13%);
    --color-input-icon: hsl(215, 16%, 67%);
    --color-btn-bg: hsl(210, 40%, 98%);
    --color-btn-bg-hover: hsl(210, 40%, 90%);
    --color-btn-text: hsl(222, 47%, 11%);
    --color-toast-border: hsl(222, 47%, 20%);
    --color-toast-bg: hsl(222, 47%, 15%);
    --color-toast-error: hsl(0, 84%, 70%);
    --color-toast-error-bg: hsl(0, 84%, 60%, 0.15);
    --color-toast-success: hsl(120, 50%, 70%);
    --color-toast-success-bg: hsl(120, 50%, 50%, 0.15);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(to bottom right,
            var(--color-bg-gradient-start) 0%,
            var(--color-bg-gradient-mid) 50%,
            var(--color-bg-gradient-end) 100%);
    background-attachment: fixed;
    color: var(--color-text);
}

/* Container and layout */
.Container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.form-wrapper {
    width: 100%;
    display: flex;
    flex-direction: row;
    gap: 1.5rem;
    justify-content: space-evenly;
}

@media (max-width:768px) {
    .form-wrapper {
        flex-direction: column;
        max-width: 28rem;
    }

    .Container {
        min-height: 0;
    }
}

/* Header styles */
.header {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    justify-content: center;
}

.logo {
    display: flex;
    justify-content: center;
}

.logo-icon {
    height: 3rem;
    width: 3rem;
    background-color: var(--color-primary);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.logo-icon i {
    width: 1.75rem;
    height: 1.75rem;
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.subtitle {
    color: var(--color-subtitle);
    font-size: 0.875rem;
}

/* Card styles */
.card {
    border: 1px solid var(--color-card-border);
    border-radius: 0.75rem;
    background: var(--color-card-bg);
    box-shadow: 0 10px 15px -3px var(--color-shadow);
    width: 40%;
}

@media (max-width:768px) {
    .card {
        width: 100%;
    }
}

.card-header {
    padding: 1.5rem 1.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.card-description {
    color: var(--color-subtitle);
    font-size: 0.875rem;
}

/* Form styles */
.form {
    display: flex;
    flex-direction: column;
}

.form-content {
    padding: 1.5rem;
    padding-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 0.75rem;
    width: 1rem;
    height: 1rem;
    color: var(--color-input-icon);
    z-index: 1;
}

.input-field {
    width: 100%;
    height: 2.5rem;
    padding: 0.5rem 0.75rem;
    padding-left: 2.5rem;
    border: 1px solid var(--color-input-border);
    border-radius: 0.375rem;
    background: var(--color-input-bg);
    font-size: 0.875rem;
    transition: all 0.15s ease;
    color: var(--color-text);
}

.input-field:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--color-primary);
}

.password-field {
    padding-right: 2.5rem;
}

.password-toggle {
    position: absolute;
    right: 0.75rem;
    background: none;
    border: none;
    color: var(--color-input-icon);
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s ease;
}

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

.password-toggle i {
    width: 1rem;
    height: 1rem;
}

/* Form options */
.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.checkbox {
    width: 1rem;
    height: 1rem;
    border: 1px solid var(--color-text);
    border-radius: 0.125rem;
    accent-color: var(--color-text);
}

.checkbox-label {
    font-size: 0.875rem;
    color: var(--color-text);
    cursor: pointer;
}

.forgot-link {
    font-size: 0.875rem;
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.15s ease;
}

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

/* Form footer */
.form-footer {
    padding: 1.5rem;
    padding-top: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.submit-btn {
    width: 100%;
    height: 2.5rem;
    background: var(--color-btn-bg);
    color: var(--color-btn-text);
    border: none;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background-color 0.15s ease;
}

.submit-btn:hover:not(:disabled) {
    background: var(--color-btn-bg-hover);
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.spinner {
    width: 1rem;
    height: 1rem;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.signup-link {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-subtitle);
}

.signup-link a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.15s ease;
}

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

/* Footer */
.footer {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-subtitle);
}

.footer a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.15s ease;
}

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

/* Toast notification */
.toast {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    background: var(--color-toast-bg);
    border: 1px solid var(--color-toast-border);
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px var(--color-shadow);
    padding: 1rem;
    max-width: 20rem;
    z-index: 50;
    display: flex;
    gap: 0.75rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    color: var(--color-text);
}

.toast.show {
    transform: translateX(0);
}

.toast.error {
    border-color: var(--color-toast-error);
    background: var(--color-toast-error-bg);
}

.toast.success {
    border-color: var(--color-toast-success);
    background: var(--color-toast-success-bg);
}

.toast-content {
    flex: 1;
}

.toast-content h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.toast-content p {
    font-size: 0.875rem;
    color: var(--color-subtitle);
}

.toast-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--color-subtitle);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.toast-close:hover {
    color: var(--color-text);
}

/* Utility classes */
.hidden {
    display: none !important;
}

.otp-inputs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 0.5rem;
    margin-bottom: 1rem;
}

.otp-digit {
    width: 3rem;
    height: 3rem;
    text-align: center;
    font-size: 1.25rem;
    border: 1px solid var(--color-input-border);
    border-radius: 0.375rem;
    background: var(--color-input-bg);
    color: var(--color-text);
    transition: all 0.15s ease;
}

.otp-digit:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--color-primary);
    border-color: var(--color-primary);
}

@media (max-width: 500px) {
    .otp-digit {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.1rem;
    }
}

/* Responsive design */
@media (max-width: 640px) {
    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .footer {
        font-size: 0.8rem;
        line-height: 1.4;
    }
}

.input,
button {
    -webkit-appearance: none;
    appearance: none;
}