/* ==========================================================================
   SSO Premium Login & Auth Theme - Phase 2 (Responsive & Aurora Glow)
   Font: Plus Jakarta Sans
   ========================================================================== */

:root {
    --primary-color: #10b981; /* Mint green accent */
    --primary-hover: #34d399;
    --primary-glow: rgba(16, 185, 129, 0.25);
    
    /* Slightly lighter background base to blend beautifully with active glow */
    --bg-gradient-1: #0f2d1e; 
    --bg-gradient-2: #091a12;

    /* Card Glassmorphism - lighter and more reflective */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-border-focus: rgba(16, 185, 129, 0.5);
    --glass-input-bg: rgba(255, 255, 255, 0.03);
    --glass-input-bg-focus: rgba(255, 255, 255, 0.06);

    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.45);

    --error-bg: rgba(239, 68, 68, 0.12);
    --error-border: rgba(239, 68, 68, 0.25);
    --error-text: #fca5a5;

    --success-bg: rgba(16, 185, 129, 0.12);
    --success-border: rgba(16, 185, 129, 0.25);
    --success-text: #a7f3d0;
}

body {
    margin: 0;
    padding: 0;
    font-family: "Plus Jakarta Sans", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-gradient-2);
}

/* Page Wrapper */
.chalk-auth-page {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 40px 20px;
    background: linear-gradient(180deg, var(--bg-gradient-1) 0%, var(--bg-gradient-2) 100%);
    overflow-x: hidden;
    overflow-y: auto;
    color: var(--text-primary);
    box-sizing: border-box;
    z-index: 1;
}

/* Dots Grid pattern overlay */
.chalk-auth-page::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 24px 24px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    pointer-events: none;
    z-index: 0;
}

/* Moving Aurora Background - Sweeps from top-left to bottom-right */
.chalk-aurora-glow {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.chalk-glow-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.65;
}

.chalk-glow-1 {
    width: 650px;
    height: 650px;
    background: radial-gradient(circle, rgba(52, 211, 153, 0.45) 0%, rgba(16, 185, 129, 0.15) 50%, transparent 80%);
    top: -10%;
    left: -10%;
    animation: move-glow-top-left-to-bottom-right-1 22s infinite ease-in-out alternate;
}

.chalk-glow-2 {
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.35) 0%, rgba(52, 211, 153, 0.1) 50%, transparent 80%);
    bottom: -10%;
    right: -10%;
    animation: move-glow-top-left-to-bottom-right-2 26s infinite ease-in-out alternate;
}

@keyframes move-glow-top-left-to-bottom-right-1 {
    0% {
        transform: translate(0, 0) scale(1);
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    }
    50% {
        transform: translate(150px, 120px) scale(1.15);
        border-radius: 50% 50% 30% 70% / 50% 60% 40% 50%;
    }
    100% {
        transform: translate(300px, 250px) scale(1.25);
        border-radius: 70% 30% 50% 50% / 30% 30% 70% 70%;
    }
}

@keyframes move-glow-top-left-to-bottom-right-2 {
    0% {
        transform: translate(0, 0) scale(1);
        border-radius: 50% 50% 30% 70% / 50% 60% 40% 50%;
    }
    50% {
        transform: translate(-120px, -100px) scale(0.95);
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    }
    100% {
        transform: translate(-250px, -200px) scale(0.9);
        border-radius: 60% 40% 60% 40% / 40% 60% 40% 60%;
    }
}

/* Floating Math Formulas background decoration */
.chalk-formulas {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1; /* Rendered above background glows */
    overflow: hidden;
}

@keyframes float {
    0% { transform: translateY(0) rotate(0deg); opacity: 0.35; }
    50% { transform: translateY(-15px) rotate(3deg); opacity: 0.6; }
    100% { transform: translateY(0) rotate(0deg); opacity: 0.35; }
}

.chalk-formulas span {
    position: absolute;
    color: rgba(255, 255, 255, 0.35); /* Increased base color opacity */
    font-weight: 500;
    font-family: "Courier New", Courier, monospace;
    user-select: none;
    animation: float 12s ease-in-out infinite;
}

.chalk-formulas span:nth-child(even) { animation-duration: 15s; animation-delay: -3s; }
.chalk-formulas span:nth-child(3n) { animation-duration: 9s; }

/* Brand Badge & Header */
.chalk-brand {
    position: relative;
    z-index: 2; /* Rendered above formulas */
    width: 100%;
    max-width: 440px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.chalk-brand-badge {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.chalk-brand-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 10px;
}

.chalk-brand-title {
    margin: 0;
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    line-height: 1.15;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, #a7f3d0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.03em;
    text-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.chalk-brand-subtitle {
    margin: 0;
    max-width: 36ch;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.01em;
}

/* Premium Card container */
.chalk-card {
    position: relative;
    z-index: 2; /* Positioned above backgrounds and formulas */
    width: min(100%, 420px);
    padding: 2.75rem 2.25rem;
    border-radius: 24px;
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(120%);
    -webkit-backdrop-filter: blur(24px) saturate(120%);
    border: 1px solid var(--glass-border);
    box-shadow: 
        0 30px 60px -15px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.05);
    box-sizing: border-box;
    overflow: visible; /* Ensure shadow/glow is not clipped */
}

/* Interactive Card Mouse-Tracking Glow Border */
.chalk-card::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: 24px;
    background: radial-gradient(
        250px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        rgba(52, 211, 153, 0.25),
        transparent 60%
    );
    border: 1.5px solid transparent;
    -webkit-mask: 
        linear-gradient(#fff 0 0) content-box, 
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 3;
}

.chalk-card:hover::before {
    opacity: 1;
}

.chalk-card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.chalk-card-title {
    margin: 0 0 0.5rem;
    font-size: 1.625rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.chalk-card-desc {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.chalk-card form {
    display: flex;
    flex-direction: column;
}

.form-group {
    margin-bottom: 1.25rem;
    position: relative;
}

/* Input Fields styling */
.chalk-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.chalk-input-icon {
    position: absolute;
    left: 1.125rem;
    width: 1.125rem;
    height: 1.125rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: color 0.2s ease;
}

.form-input {
    width: 100%;
    min-height: 3.25rem;
    padding: 0.75rem 2.75rem 0.75rem 3rem;
    border-radius: 12px;
    background: var(--glass-input-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    font-weight: 500;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-sizing: border-box;
}

.form-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.form-input:focus {
    outline: none;
    border-color: var(--glass-border-focus);
    background: var(--glass-input-bg-focus);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.form-input:focus ~ .chalk-input-icon {
    color: var(--primary-hover);
}

.form-input[readonly] {
    background: rgba(255, 255, 255, 0.01);
    color: var(--text-secondary);
    border-color: rgba(255, 255, 255, 0.04);
    cursor: default;
}

/* Password Toggle Eye Button */
.password-toggle-btn {
    position: absolute;
    right: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    padding: 4px;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s ease;
    z-index: 2;
}

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

.password-toggle-btn svg {
    width: 1.125rem;
    height: 1.125rem;
}

/* Errors & Field Warnings */
.text-danger {
    display: block;
    margin-top: 0.375rem;
    margin-left: 0.5rem;
    color: var(--error-text);
    font-size: 0.8rem;
    font-weight: 600;
}

/* Checkbox and Inline Forgot Password row */
.chalk-checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    margin-top: 0.25rem;
    margin-bottom: 1.5rem;
    box-sizing: border-box;
}

.chalk-checkbox-row input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    margin: 0;
    accent-color: var(--primary-color);
    cursor: pointer;
    border: 1px solid var(--glass-border);
    background: var(--glass-input-bg);
    border-radius: 4px;
}

.chalk-checkbox-row label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.chalk-link-forgot-inline {
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Redesigned Pill-shaped Gradient Buttons */
.chalk-btn {
    width: 100%;
    min-height: 3.25rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 9999px; /* Clean Pill shape */
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 14px 0 rgba(16, 185, 129, 0.3);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
}

.chalk-btn svg {
    width: 1.125rem;
    height: 1.125rem;
    transition: transform 0.25s ease;
}

.chalk-btn:hover {
    background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(16, 185, 129, 0.45);
}

.chalk-btn:hover svg {
    transform: translateX(4px);
}

.chalk-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 10px 0 rgba(16, 185, 129, 0.25);
}

/* Error and Alert Box layout */
.chalk-alert {
    margin-bottom: 1.5rem;
    padding: 0.875rem 1rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.4;
    text-align: center;
    backdrop-filter: blur(8px);
}

.chalk-alert-error {
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    color: var(--error-text);
}

.chalk-alert-success {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    color: var(--success-text);
}

/* Custom validation summary formatting (No default list bullet items) */
.chalk-validation-summary ul {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: center;
}

.chalk-validation-summary li {
    margin-bottom: 0.25rem;
}

.chalk-validation-summary li:last-child {
    margin-bottom: 0;
}

/* Links & Navigations */
.chalk-links {
    margin-top: 1.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.625rem;
    text-align: center;
    font-size: 0.85rem;
}

.chalk-links-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
}

.chalk-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.chalk-link-strong, .chalk-link-bold, .chalk-back-link {
    color: var(--text-primary);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.chalk-back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.chalk-back-link svg {
    transition: transform 0.2s ease;
}

.chalk-back-link:hover svg {
    transform: translateX(-3px);
}

.chalk-link:hover {
    color: var(--text-secondary);
}

.chalk-link-strong:hover, .chalk-link-bold:hover, .chalk-back-link:hover {
    color: var(--primary-hover);
}

/* Sleek Top-Left Absolute Back Button */
.chalk-back-btn-top {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
}

.chalk-back-btn-top:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    transform: translateX(-2px);
}

.chalk-back-btn-top svg {
    width: 1rem;
    height: 1rem;
}

/* User Identity Preview in Step 2 */
.chalk-user-preview {
    margin-bottom: 1.25rem;
}

.chalk-user-preview-card {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.625rem 0.75rem;
    background: rgba(255, 255, 255, 0.02) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 12px !important;
    backdrop-filter: blur(8px);
}

.chalk-user-avatar {
    width: 2.5rem;
    height: 2.5rem;
    background: rgba(16, 185, 129, 0.1) !important;
    color: var(--primary-hover) !important;
    border: 1px solid rgba(16, 185, 129, 0.2) !important;
    border-radius: 8px !important;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
}

.chalk-user-info {
    flex: 1;
    overflow: hidden;
    text-align: left;
}

.chalk-user-name {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary) !important;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chalk-change-account {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted) !important;
    cursor: pointer;
    transition: color 0.2s ease;
    text-align: left;
}

.chalk-change-account:hover {
    color: var(--primary-hover) !important;
}

/* Premium Step Progress Indicator */
.chalk-step-indicator {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 280px; /* Made wider */
    margin: 0 auto 1.75rem auto; /* Centered horizontally with slightly less margin */
    box-sizing: border-box;
}

.chalk-step-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem; /* Smaller gap */
    position: relative;
    z-index: 1;
}

.chalk-step-circle {
    width: 1.625rem; /* Smaller circle */
    height: 1.625rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.725rem; /* Smaller text */
    font-weight: 700;
    color: var(--text-muted);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: inset 0 1px 0 0 rgba(255, 255, 255, 0.05);
}

.chalk-step-label {
    font-size: 0.625rem; /* Smaller text label */
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
}

.chalk-step-check {
    width: 0.7rem; /* Smaller check icon */
    height: 0.7rem;
    color: #ffffff;
    display: none;
}

.chalk-step-line {
    position: relative;
    flex: 1;
    height: 2px;
    background: rgba(255, 255, 255, 0.08);
    margin: 0 0.5rem; /* Smaller margins */
    transform: translateY(-0.4375rem); /* Align with the smaller circle height center */
    overflow: hidden;
    border-radius: 9999px;
}

.chalk-step-line::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0%;
    background: var(--primary-color);
    box-shadow: 0 0 8px var(--primary-glow);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Active State styles */
.chalk-step-node.chalk-step-active .chalk-step-circle {
    border-color: var(--primary-color);
    background: rgba(16, 185, 129, 0.15);
    color: var(--primary-hover);
    box-shadow: 0 0 12px var(--primary-glow);
}

.chalk-step-node.chalk-step-active .chalk-step-label {
    color: var(--text-primary);
}

/* Completed State styles */
.chalk-step-node.chalk-step-completed .chalk-step-circle {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 0 12px var(--primary-glow);
}

.chalk-step-node.chalk-step-completed .chalk-step-label {
    color: var(--primary-hover);
}

.chalk-step-node.chalk-step-completed .chalk-step-check {
    display: block;
}

.chalk-step-node.chalk-step-completed .chalk-step-number {
    display: none;
}

.chalk-step-line.chalk-step-active::after {
    width: 100%;
}

/* Card footer logo badge styling */
a.chalk-card-footer {
    margin-top: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.775rem;
    font-weight: 600;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1.25rem;
    letter-spacing: 0.02em;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

a.chalk-card-footer:hover {
    color: var(--primary-hover);
}

a.chalk-card-footer:hover .chalk-footer-icon {
    color: var(--primary-hover);
    transform: scale(1.1);
}

.chalk-footer-icon {
    width: 0.875rem;
    height: 0.875rem;
    color: var(--primary-color);
    transition: all 0.2s ease;
}

/* Pencil Edit Identity button */
.chalk-edit-identity-btn {
    background: none;
    border: none;
    padding: 6px;
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    margin-left: auto; /* Push to the right */
}

.chalk-edit-identity-btn:hover {
    color: var(--primary-hover);
    background: rgba(255, 255, 255, 0.05);
}

.chalk-edit-identity-btn svg {
    width: 0.95rem;
    height: 0.95rem;
}

.chalk-user-subtext {
    font-size: 0.725rem;
    color: var(--text-muted);
    display: block;
    text-align: left;
    margin-top: 0.125rem;
}

/* Password Success Mail Send Animation */
.chalk-mail-success-animation {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 1rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chalk-mail-paper-plane-wrapper {
    position: relative;
    z-index: 2;
    animation: plane-fly 2.5s infinite ease-in-out;
}

.chalk-mail-paper-plane {
    width: 2.25rem;
    height: 2.25rem;
    color: var(--primary-color);
}

.chalk-mail-rings {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.chalk-ring-1, .chalk-ring-2 {
    position: absolute;
    inset: 0;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    opacity: 0;
    animation: ring-pulse 2.5s infinite cubic-bezier(0.1, 0.8, 0.3, 1);
}

.chalk-ring-2 {
    animation-delay: 1.25s;
}

@keyframes plane-fly {
    0% {
        transform: translate(0, 0) scale(1) rotate(0deg);
    }
    30% {
        transform: translate(8px, -8px) scale(0.9) rotate(-10deg);
    }
    50% {
        transform: translate(-4px, 4px) scale(1.05) rotate(5deg);
    }
    100% {
        transform: translate(0, 0) scale(1) rotate(0deg);
    }
}

@keyframes ring-pulse {
    0% {
        transform: scale(0.4);
        opacity: 0.8;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* Responsiveness - Tailored for Neat Mobile Styling & Glare Protection */
@media (max-width: 480px) {
    .chalk-auth-page {
        justify-content: center;
        padding: 24px 16px;
    }
    .chalk-card {
        padding: 2rem 1.25rem;
        border-radius: 20px;
    }
    .chalk-back-btn-top {
        top: 1.125rem;
        left: 1.125rem;
        width: 2rem;
        height: 2rem;
    }
    .chalk-checkbox-row {
        flex-direction: row;
        justify-content: space-between;
        width: 100%;
        gap: 4px;
    }
    .chalk-link-forgot-inline {
        font-size: 0.775rem;
    }
    .chalk-checkbox-row label {
        font-size: 0.775rem;
    }
    .chalk-brand-title {
        font-size: 2rem;
    }
    .chalk-step-indicator {
        margin-bottom: 1.5rem;
    }
    .chalk-step-circle {
        width: 2rem;
        height: 2rem;
        font-size: 0.8rem;
    }
    .chalk-step-label {
        font-size: 0.65rem;
    }
    .chalk-step-line {
        margin: 0 0.5rem;
        transform: translateY(-0.5625rem);
    }
}