/* ==========================================================
   CURIS SUPER ADMINISTRATOR LOGIN STYLESHEET
   Professional, Secure, and Modern Design
   ========================================================== */

/* ----------------
   VARIABLES
   ---------------- */
:root {
    /* Brand Colors */
    --primary-color: #1D2A3B;
    /* Deep Navy */
    --accent-color: #00BFA5;
    /* Vibrant Teal */
    --secondary-color: #FF6B35;
    /* Sunset Orange */
    --neutral-light: #F5F5F7;
    /* Soft Gray */
    --neutral-dark: #333333;
    /* Charcoal Gray */

    /* Extended Color System */
    --success-color: #34C759;
    /* Success Green */
    --error-color: #FF3B30;
    /* Error Red */
    --warning-color: #FFCC00;
    /* Warning Yellow */
    --info-color: #5AC8FA;
    /* Info Blue */

    /* Functional Colors */
    --border-color: rgba(0, 0, 0, 0.1);
    --hover-bg: rgba(0, 0, 0, 0.03);
    --shadow-color: rgba(0, 0, 0, 0.08);
    --input-focus: rgba(0, 191, 165, 0.1);

    /* Gradients */
    --primary-gradient: linear-gradient(135deg, var(--primary-color), #2D4054);
    --accent-gradient: linear-gradient(135deg, var(--accent-color), #00E2C3);
    --secondary-gradient: linear-gradient(135deg, var(--secondary-color), #FF8556);
    --security-gradient: linear-gradient(135deg, #1D2A3B, #2D4054, #3E5869);

    /* Typography */
    --heading-font: 'Poppins', sans-serif;
    --body-font: 'Poppins', sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    /* 4px */
    --space-sm: 0.5rem;
    /* 8px */
    --space-md: 1rem;
    /* 16px */
    --space-lg: 1.5rem;
    /* 24px */
    --space-xl: 2rem;
    /* 32px */
    --space-xxl: 3rem;
    /* 48px */
    --space-xxxl: 4rem;
    /* 64px */

    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;

    /* Shadows */
    --shadow-sm: 0 2px 5px var(--shadow-color);
    --shadow-md: 0 4px 10px var(--shadow-color);
    --shadow-lg: 0 8px 30px var(--shadow-color);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.15);

    /* Animations */
    --transition-fast: 0.2s;
    --transition-medium: 0.3s;
    --transition-slow: 0.5s;

    /* Z-index layers */
    --z-nav: 100;
    --z-overlay: 300;
    --z-modal: 400;
    --z-notification: 500;
}

/* Reset & Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--body-font);
    color: var(--neutral-dark);
    background-color: var(--neutral-light);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(0, 191, 165, 0.03) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(29, 42, 59, 0.03) 0%, transparent 20%),
        radial-gradient(circle at 50% 50%, rgba(255, 107, 53, 0.02) 0%, transparent 30%);
    background-attachment: fixed;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--heading-font);
    color: var(--primary-color);
    line-height: 1.3;
    font-weight: 600;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: var(--space-md);
}

h3 {
    font-size: 1.4rem;
    margin-bottom: var(--space-sm);
}

p {
    margin-bottom: var(--space-md);
}

strong {
    color: #FF6B35;
    font-weight: 600;
}

em {
    font-style: italic;
    color: var(--accent-color);
}

/* Links */
a {
    color: var(--accent-color);
    text-decoration: none;
    position: relative;
    transition: color var(--transition-medium);
}

a:hover {
    color: #008e7b;
}

/* Header Styles */
header {
    background: white;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-nav);
    transition: all var(--transition-medium);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
}

.logo a {
    display: flex;
    align-items: center;
    transition: transform var(--transition-medium);
}

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

.logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
}

nav ul li a {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    color: var(--primary-color);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-medium);
}

nav ul li a:hover {
    background: var(--accent-color);
    color: white;
}

/* Main Content Styles */
main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-lg);
}

/* Login Container */
.login-container {
    width: 100%;
    max-width: 1200px;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    position: relative;
    min-height: 600px;
}

/* Login Screen */
.login-screen {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: var(--space-xl);
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.login-screen.active {
    display: flex;
    opacity: 1;
}

/* Email Input Screen Layout */
#emailInputScreen {
    display: flex;
    flex-direction: row;
    gap: var(--space-xxl);
}

/* Intro Text Section */
.intro-text {
    flex: 1;
    padding: var(--space-xl);
    background: var(--primary-gradient);
    color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.intro-text h1 {
    background: linear-gradient(135deg, white, rgba(255, 255, 255, 0.8));
    -webkit-background-clip: text;
    background-clip: text;
    margin-bottom: var(--space-lg);
}

.intro-text h2 {
    color: var(--accent-color);
    margin-bottom: var(--space-md);
}

.intro-text hr {
    border: none;
    height: 3px;
    background: var(--accent-gradient);
    margin: var(--space-lg) 0;
    border-radius: 3px;
}

.feature-list {
    margin: var(--space-xl) 0;
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: all var(--transition-medium);
}

.feature:hover {
    transform: translateX(10px);
    background: rgba(255, 255, 255, 0.15);
}

.feature i {
    font-size: 1.5rem;
    color: var(--accent-color);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 191, 165, 0.2);
    border-radius: var(--radius-full);
}

.feature span {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    line-height: 1.5;
}

.tagline {
    margin-top: var(--space-xxl);
    font-size: 1.25rem;
    text-align: center;
    color: var(--accent-color);
}

/* Login Form Section */
.login-form {
    flex: 1;
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-form h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--primary-color);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--primary-color);
}

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

input[type="email"],
input[type="text"] {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--body-font);
    transition: all var(--transition-medium);
}

input[type="email"]:focus,
input[type="text"]:focus {
    border-color: var(--accent-color);
    outline: none;
    box-shadow: 0 0 0 4px var(--input-focus);
}

.validation-icon {
    position: absolute;
    right: var(--space-md);
    font-size: 1.2rem;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.validation-icon.valid {
    color: var(--success-color);
    opacity: 1;
}

.validation-icon.invalid {
    color: var(--error-color);
    opacity: 1;
}

.error-message {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: var(--space-sm);
    display: none;
}

.error-message.show {
    display: block;
    animation: fadeInUp 0.3s ease-out;
}

button {
    width: 100%;
    padding: var(--space-md);
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 600;
    font-family: var(--body-font);
    cursor: pointer;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 191, 165, 0.2);
}

button::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 0.7s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 191, 165, 0.3);
}

button:hover::before {
    left: 100%;
}

button:active {
    transform: translateY(0);
}

button:disabled {
    background: var(--neutral-light);
    color: var(--neutral-dark);
    cursor: not-allowed;
    box-shadow: none;
}

button:disabled:hover {
    transform: none;
}

/* Verification Screen */
#verificationScreen {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.verification-header {
    margin-bottom: var(--space-xl);
}

.success-message {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin: var(--space-md) 0;
    padding: var(--space-md);
    background: rgba(52, 199, 89, 0.1);
    border-radius: var(--radius-md);
    color: var(--success-color);
}

.success-message i {
    font-size: 1.5rem;
}

#emailDisplay {
    font-weight: 600;
}

.verification-instructions {
    color: var(--neutral-dark);
    font-size: 0.95rem;
}

.verification-form {
    width: 100%;
    max-width: 500px;
    padding: var(--space-xl);
    background: var(--neutral-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.verification-code-container {
    position: relative;
}

#verificationCode {
    text-align: center;
    letter-spacing: var(--space-md);
    font-size: 1.8rem;
    font-weight: 600;
    padding: var(--space-lg);
}

.countdown-timer {
    text-align: center;
    margin: var(--space-lg) 0;
    color: var(--secondary-color);
    font-weight: 500;
}

#countdown {
    font-weight: 600;
    font-size: 1.2rem;
}

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

#resendBtn {
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    padding: var(--space-sm) var(--space-lg);
    width: auto;
    display: inline-block;
    margin-top: var(--space-sm);
}

#resendBtn:hover:not(:disabled) {
    background: var(--accent-color);
    color: white;
}

#resendCountdown {
    font-size: 0.9rem;
    color: var(--neutral-dark);
    margin-top: var(--space-sm);
}

.alternative-action {
    margin-top: var(--space-lg);
}

#backToEmailBtn {
    color: var(--primary-color);
    font-weight: 500;
}

/* Overlays */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-overlay);
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.overlay.show {
    display: flex;
    opacity: 1;
}

/* Loading Overlay */
.loading-container {
    text-align: center;
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--neutral-light);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-lg);
}

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

#loadingMessage {
    font-size: 1.1rem;
    color: var(--primary-color);
}

/* Error Overlay */
.error-container {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
    max-width: 400px;
}

.error-container i {
    font-size: 3rem;
    color: var(--error-color);
    margin-bottom: var(--space-md);
}

.error-container h3 {
    color: var(--error-color);
    margin-bottom: var(--space-md);
}

#errorText {
    margin-bottom: var(--space-xl);
    color: var(--neutral-dark);
}

#errorCloseBtn {
    background: var(--error-color);
    color: white;
    width: auto;
    padding: var(--space-sm) var(--space-xl);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.modal.show {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.close-modal {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--neutral-dark);
    transition: color var(--transition-medium);
}

.close-modal:hover {
    color: var(--error-color);
}

.modal-content h2 {
    margin-bottom: var(--space-xl);
    text-align: center;
}

.required {
    color: var(--error-color);
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--body-font);
    transition: all var(--transition-medium);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer Styles */
footer {
    background: var(--primary-gradient);
    color: white;
    padding: var(--space-xl) 0;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-gradient);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--space-lg);
}

.footer-theme button {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    padding: var(--space-sm);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-medium);
}

.footer-theme button:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(20deg);
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.footer-social a {
    color: white;
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    transition: all var(--transition-medium);
}

.footer-social a:hover {
    background: var(--accent-color);
    transform: translateY(-5px);
}

.footer-middle {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.footer-middle h4 {
    color: var(--accent-color);
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
}

.footer-middle ul {
    list-style: none;
}

.footer-middle li {
    margin-bottom: var(--space-sm);
}

.footer-middle a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-medium);
}

.footer-middle a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Dark Mode */
body.dark-mode {
    background-color: #121212;
    color: rgba(255, 255, 255, 0.87);
}

body.dark-mode header {
    background: rgba(18, 18, 18, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

body.dark-mode .login-container {
    background: #1E1E1E;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

body.dark-mode .intro-text {
    background: var(--security-gradient);
}

body.dark-mode .login-form h2 {
    color: rgba(255, 255, 255, 0.95);
}

body.dark-mode .form-group label {
    color: rgba(255, 255, 255, 0.9);
}

body.dark-mode input[type="email"],
body.dark-mode input[type="text"],
body.dark-mode textarea {
    background: #2A2A2A;
    border-color: rgba(255, 255, 255, 0.1);
    color: white;
}

body.dark-mode .verification-form {
    background: #2A2A2A;
}

body.dark-mode .error-container,
body.dark-mode .loading-container,
body.dark-mode .modal-content {
    background: #1E1E1E;
    color: rgba(255, 255, 255, 0.87);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    #emailInputScreen {
        flex-direction: column;
    }

    .intro-text,
    .login-form {
        max-width: 700px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    header .header-container {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
        gap: var(--space-sm);
    }

    .feature {
        flex-direction: column;
        text-align: center;
    }

    .feature i {
        margin-bottom: var(--space-sm);
    }

    .footer-middle {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-top {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    main {
        padding: var(--space-md);
    }

    .login-container {
        border-radius: var(--radius-lg);
    }

    .login-screen {
        padding: var(--space-md);
    }

    .intro-text {
        padding: var(--space-md);
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .feature-list {
        margin: var(--space-lg) 0;
    }

    .feature {
        padding: var(--space-sm);
    }

    .feature span {
        font-size: 1rem;
    }

    #verificationCode {
        letter-spacing: var(--space-sm);
        font-size: 1.5rem;
        padding: var(--space-md);
    }

    .modal-content {
        width: 95%;
        padding: var(--space-md);
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
    transition: background var(--transition-medium);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

/* Print Styles */
@media print {

    header,
    footer,
    button,
    .overlay,
    .modal {
        display: none;
    }

    body {
        background: none;
        color: black;
    }

    .login-container {
        box-shadow: none;
        border: 1px solid #ddd;
    }

    .intro-text {
        background: none;
        color: black;
    }

    h1,
    h2,
    h3 {
        color: black;
        -webkit-background-clip: unset;
        background-clip: unset;
        background: none;
    }

    .feature i {
        display: none;
    }

    .tagline {
        color: black;
    }
}