/* ========================================
   CSS RESET & BASE STYLES
   ======================================== */

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

:root {
    /* Color Palette */
    --bg-main: #f6f4f1;
    --bg-card: #ffffff;
    --primary: #1f3142;
    --accent: #a3896b;
    --text-primary: #1f3142;
    --text-secondary: #5e5e5e;
    --text-disabled: rgba(31, 49, 66, 0.4);
    --error: #dc3545;
    --success: #28a745;

    /* Typography */
    --font-heading: "Playfair Display", serif;
    --font-body: "Inter", sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(31, 49, 66, 0.08);
    --shadow-md: 0 4px 16px rgba(31, 49, 66, 0.12);
    --shadow-lg: 0 8px 32px rgba(31, 49, 66, 0.16);
    --shadow-xl: 0 16px 48px rgba(31, 49, 66, 0.2);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 400ms ease-in-out;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

/* ========================================
   LOGIN CONTAINER
   ======================================== */

.login-container {
    display: flex;
    min-height: 100vh;
    background-color: var(--bg-main);
}

/* ========================================
   LEFT PANEL - DECORATIVE
   ======================================== */

.login-left-panel {
    flex: 1;
    background: linear-gradient(135deg, var(--primary) 0%, #2a4a5e 100%);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.login-left-panel::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        circle,
        rgba(163, 137, 107, 0.15) 0%,
        transparent 70%
    );
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%,
    100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* Brand Section */
.brand-section {
    position: relative;
    z-index: 2;
}

.brand-icon {
    animation: fadeInDown 0.6s ease-out;
}

.logo-image {
    width: 120px;
    height: 120px;
    object-fit: contain;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.2));
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--bg-card);
    margin-bottom: var(--spacing-xs);
    animation: fadeInDown 0.6s ease-out 0.1s backwards;
}

.brand-tagline {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 300;
    animation: fadeInDown 0.6s ease-out 0.2s backwards;
}

/* Decorative Illustration */
.decorative-illustration {
    position: relative;
    height: 200px;
    margin: 0;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.floating-card.card-1 {
    width: 200px;
    height: 120px;
    top: 20%;
    left: 10%;
    animation: float 6s ease-in-out infinite;
}

.floating-card.card-2 {
    width: 180px;
    height: 140px;
    top: 50%;
    right: 15%;
    animation: float 7s ease-in-out infinite 1s;
}

.floating-card.card-3 {
    width: 160px;
    height: 100px;
    bottom: 10%;
    left: 30%;
    animation: float 8s ease-in-out infinite 2s;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

.card-shimmer {
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Features List */
.features-list {
    position: relative;
    z-index: 2;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    animation: fadeInLeft 0.6s ease-out backwards;
}

.feature-item:nth-child(1) {
    animation-delay: 0.3s;
}
.feature-item:nth-child(2) {
    animation-delay: 0.4s;
}
.feature-item:nth-child(3) {
    animation-delay: 0.5s;
}

.feature-icon {
    width: 24px;
    height: 24px;
    background-color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--primary);
}

/* ========================================
   RIGHT PANEL - LOGIN FORM
   ======================================== */

.login-right-panel {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background-color: var(--bg-main);
}

.login-form-wrapper {
    width: 100%;
    max-width: 480px;
    background-color: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    animation: fadeInUp 0.6s ease-out;
}

/* Login Header */
.login-header {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.login-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.login-subtitle {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* ========================================
   FORM STYLES
   ======================================== */

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

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

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.required {
    color: var(--error);
    margin-left: 2px;
}

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

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    pointer-events: none;
    transition: color var(--transition-base);
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 3rem;
    font-size: 1rem;
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: var(--bg-card);
    border: 2px solid rgba(31, 49, 66, 0.15);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    outline: none;
}

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

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(31, 49, 66, 0.08);
}

.form-input:focus + .toggle-password,
.form-input:focus ~ .input-icon {
    color: var(--primary);
}

.form-input.error {
    border-color: var(--error);
}

.form-input.error:focus {
    box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.1);
}

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    transition: color var(--transition-base);
}

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

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

.error-message {
    display: block;
    font-size: 0.8125rem;
    color: var(--error);
    margin-top: var(--spacing-xs);
    min-height: 1.25rem;
}

/* ========================================
   FORM OPTIONS
   ======================================== */

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

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

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(31, 49, 66, 0.3);
    border-radius: 4px;
    margin-right: var(--spacing-xs);
    position: relative;
    transition: all var(--transition-base);
}

.checkbox-label input[type="checkbox"]:checked ~ .checkbox-custom {
    background-color: var(--primary);
    border-color: var(--primary);
}

.checkbox-label input[type="checkbox"]:checked ~ .checkbox-custom::after {
    content: "";
    position: absolute;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-label input[type="checkbox"]:focus ~ .checkbox-custom {
    box-shadow: 0 0 0 4px rgba(31, 49, 66, 0.08);
}

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

.forgot-password {
    font-size: 0.875rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-base);
}

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

/* ========================================
   BUTTONS
   ======================================== */

.btn-primary {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-body);
    color: var(--bg-card);
    background-color: var(--primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.btn-primary::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: left var(--transition-slow);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background-color: #2a4a5e;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-primary:focus {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
}

.btn-primary.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-primary.loading .btn-text {
    opacity: 0;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    position: absolute;
}

.btn-primary.loading .btn-loader {
    display: block;
}

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

/* ========================================
   DIVIDER
   ======================================== */

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: var(--spacing-md) 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.divider::before,
.divider::after {
    content: "";
    flex: 1;
    border-bottom: 1px solid rgba(31, 49, 66, 0.15);
}

.divider span {
    padding: 0 var(--spacing-sm);
}

/* ========================================
   SOCIAL LOGIN
   ======================================== */

.social-login {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.btn-social {
    flex: 1;
    padding: 0.875rem;
    background-color: var(--bg-card);
    border: 2px solid rgba(31, 49, 66, 0.15);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-social:hover {
    border-color: var(--primary);
    background-color: rgba(31, 49, 66, 0.02);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-social:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ========================================
   FOOTER
   ======================================== */

.login-footer {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(31, 49, 66, 0.1);
}

.login-footer p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.link-accent {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-base);
}

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

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ========================================
   OTP VERIFICATION SECTION
   ======================================== */

.otp-form {
    animation: fadeInUp 0.4s ease-out;
}

.otp-header {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.back-button {
    position: absolute;
    left: 0;
    top: 0;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.back-button:hover {
    background-color: rgba(31, 49, 66, 0.05);
    color: var(--primary);
}

.back-button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.otp-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    text-align: center;
    padding-top: var(--spacing-sm);
}

.otp-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.5;
}

.otp-subtitle span {
    color: var(--primary);
    font-weight: 600;
}

.otp-inputs {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin: var(--spacing-lg) 0;
}

.otp-input {
    width: 50px;
    height: 56px;
    font-size: 1.5rem;
    font-weight: 600;
    font-family: var(--font-body);
    text-align: center;
    color: var(--text-primary);
    background-color: var(--bg-card);
    border: 2px solid rgba(31, 49, 66, 0.15);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    outline: none;
}

.otp-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(31, 49, 66, 0.08);
    transform: scale(1.05);
}

.otp-input.filled {
    border-color: var(--accent);
    background-color: rgba(163, 137, 107, 0.05);
}

.otp-input.error {
    border-color: var(--error);
    animation: shake 0.4s ease-in-out;
}

@keyframes shake {
    0%,
    100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-8px);
    }
    75% {
        transform: translateX(8px);
    }
}

.resend-section {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.resend-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.resend-button {
    background: none;
    border: none;
    color: var(--accent);
    font-weight: 600;
    cursor: pointer;
    padding: 0;
    margin-left: 0.25rem;
    transition: color var(--transition-base);
    font-family: var(--font-body);
    font-size: 0.875rem;
}

.resend-button:hover:not(:disabled) {
    color: var(--primary);
    text-decoration: underline;
}

.resend-button:disabled {
    color: var(--text-disabled);
    cursor: not-allowed;
}

.resend-button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ========================================
   FORGOT PASSWORD SECTION
   ======================================== */

.forgot-password-form {
    animation: fadeInUp 0.4s ease-out;
}

.forgot-header {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.forgot-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    text-align: center;
    padding-top: var(--spacing-sm);
}

.forgot-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.6;
    max-width: 400px;
    margin: 0 auto;
}

/* ========================================
   SUCCESS MESSAGE
   ======================================== */

.success-message-container {
    text-align: center;
    padding: var(--spacing-lg) 0;
    animation: fadeInUp 0.4s ease-out;
}

.success-icon {
    margin: 0 auto var(--spacing-lg);
    animation: scaleIn 0.5s ease-out;
}

@keyframes scaleIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.success-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.success-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.success-text strong {
    color: var(--primary);
    font-weight: 600;
}

.success-subtext {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

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

@media (max-width: 1024px) {
    .login-left-panel {
        padding: var(--spacing-lg);
    }

    .brand-title {
        font-size: 2.5rem;
    }

    .decorative-illustration {
        height: 200px;
    }
}

@media (max-width: 768px) {
    .login-container {
        flex-direction: column;
    }

    .login-left-panel {
        min-height: 40vh;
        padding: var(--spacing-lg);
    }

    .brand-title {
        font-size: 2rem;
    }

    .brand-tagline {
        font-size: 1rem;
    }

    .decorative-illustration {
        display: none;
    }

    .features-list {
        display: flex;
        gap: var(--spacing-md);
        flex-wrap: wrap;
    }

    .feature-item {
        margin-bottom: 0;
        font-size: 0.875rem;
    }

    .login-right-panel {
        padding: var(--spacing-md);
    }

    .login-form-wrapper {
        padding: var(--spacing-lg);
    }

    .login-title {
        font-size: 2rem;
    }

    .login-subtitle {
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .login-left-panel {
        min-height: 30vh;
        padding: var(--spacing-md);
    }

    .brand-title {
        font-size: 1.75rem;
    }

    .login-form-wrapper {
        padding: var(--spacing-md);
        border-radius: var(--radius-lg);
    }

    .login-title {
        font-size: 1.75rem;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
    }

    .social-login {
        flex-direction: column;
    }

    .otp-inputs {
        gap: 0.5rem;
    }

    .otp-input {
        width: 45px;
        height: 52px;
        font-size: 1.25rem;
    }

    .otp-title {
        font-size: 1.5rem;
    }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

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

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .form-input {
        border-width: 3px;
    }

    .btn-primary {
        border: 3px solid var(--bg-card);
    }
}