/* =============================================================
   CodeForge — Authentication Page Stylesheet
   auth.css | Unified styles for Login and Signup canvas, card,
   inputs, buttons, typography, and layout transitions.
   ============================================================= */

/* ─────────────────────────────────────────────────────────────
   0. MESH BACKGROUND & PALETTE OVERRIDES
   Matches the Problems/Home page mesh palette.
   ───────────────────────────────────────────────────────────── */
/* Force plain black navbar brand on mesh background pages */
/* ─────────────────────────────────────────────────────────────
   1. AUTH LAYOUT & CANVAS PANEL
   ───────────────────────────────────────────────────────────── */
.auth-layout {
    max-width: 1360px;
    margin: 0 auto;
    padding: 40px 48px 80px;
    animation: fadeInUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.auth-canvas {
    background: rgba(255, 255, 255, 0.28);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid rgba(0, 0, 0, 0.14);
    border-radius: 28px;
    padding: 60px 40px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.07);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* Layout style variants */
.auth-canvas--split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    padding: 80px 60px;
}

/* ─────────────────────────────────────────────────────────────
   2. TYPOGRAPHY & DISPLAY HEADERS
   ───────────────────────────────────────────────────────────── */
.auth-display-title {
    font-family: Georgia, serif;
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: #111111;
    margin: 0 0 16px;
    text-align: center;
}

.auth-canvas--split .auth-display-title {
    text-align: left;
    font-size: clamp(3rem, 6vw, 5rem);
}

.auth-subtitle {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    color: #555555;
    font-weight: 500;
    margin: 0 0 40px;
    text-align: center;
}

/* ─────────────────────────────────────────────────────────────
   3. UNIFIED AUTHENTICATION CARD
   ───────────────────────────────────────────────────────────── */
.auth-card-container {
    width: 100%;
    display: flex;
    justify-content: center;
}

.auth-canvas--split .auth-card-container {
    justify-content: flex-start;
}

.auth-card {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 24px;
    padding: 40px;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.auth-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: rgba(0, 0, 0, 0.2);
}

.auth-card-header {
    margin-bottom: 28px;
    text-align: left;
}

.auth-card-title {
    font-family: Georgia, serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: #111111;
    margin: 0 0 8px;
}

.auth-card-subtitle {
    font-size: 0.95rem;
    color: #666666;
    margin: 0;
}

/* ─────────────────────────────────────────────────────────────
   4. FORM ELEMENTS & INPUTS
   ───────────────────────────────────────────────────────────── */
.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    color: #333333;
}

.input-wrapper {
    position: relative;
}

.form-input {
    width: 100%;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #d4cec5;
    border-radius: 999px; /* Pill layout matching inputs in mockup */
    color: #111111;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    outline: none;
}

.form-input:focus {
    border-color: #111111; /* Standardized focus state (brand purple) */
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.08);
    background: #ffffff;
}

.form-input::placeholder {
    color: #aaaaaa;
    font-weight: 400;
}

/* Password Toggle Icon Button */
.password-toggle {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #888888;
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.password-toggle:hover {
    color: #111111;
    background-color: rgba(0, 0, 0, 0.05);
}

/* ─────────────────────────────────────────────────────────────
   5. OPTIONS & CHECKBOXES
   ───────────────────────────────────────────────────────────── */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    font-size: 0.92rem;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-wrapper input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #111111;
    cursor: pointer;
    border-radius: 4px;
}

.checkbox-wrapper label {
    color: #555555;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.92rem;
}

.forgot-link {
    color: #555555;
    text-decoration: underline;
    font-weight: 500;
    transition: color 0.2s ease;
    font-size: 0.92rem;
}

.forgot-link:hover {
    color: #111111;
}

/* ─────────────────────────────────────────────────────────────
   6. PRIMARY & SECONDARY ACTION BUTTONS
   ───────────────────────────────────────────────────────────── */
.submit-btn,
.auth-btn-primary {
    width: 100%;
    padding: 14px 28px;
    background: #111111; /* Standardized Deep Purple */
    color: #ffffff;
    border: none;
    border-radius: 999px; /* Pill layout matching button in mockup */
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
}

.submit-btn:hover,
.auth-btn-primary:hover {
    background: #333333; /* Slightly darker purple on hover */
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.submit-btn:active,
.auth-btn-primary:active {
    transform: translateY(1px);
}

.submit-btn:disabled {
    background: #666666;
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

/* Divider Line ("OR") */
.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 24px 0;
    color: #888888;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.auth-divider:not(:empty)::before {
    margin-right: 12px;
}

.auth-divider:not(:empty)::after {
    margin-left: 12px;
}

/* Secondary Action Button (Outline) */
.auth-btn-outline {
    width: 100%;
    padding: 12px 24px;
    background: transparent;
    color: #111111;
    border: 1.5px solid #d4cec5;
    border-radius: 999px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    text-align: center;
    display: inline-block;
    cursor: pointer;
    box-sizing: border-box;
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.auth-btn-outline:hover {
    background-color: rgba(0, 0, 0, 0.03);
    border-color: #111111;
    transform: translateY(-1px);
}

.auth-btn-outline:active {
    transform: translateY(1px);
}

/* Footer & Navigation links */
.form-footer,
.login-link {
    text-align: center;
    margin-top: 24px;
    font-size: 0.9rem;
    color: #666666;
    font-weight: 500;
}

.form-footer a,
.login-link a {
    color: #111111;
    text-decoration: underline;
    font-weight: 600;
    transition: color 0.2s ease;
}

.form-footer a:hover,
.login-link a:hover {
    color: #333333;
}

/* ─────────────────────────────────────────────────────────────
   7. ERRORS & MESSAGES
   ───────────────────────────────────────────────────────────── */
.error-container {
    width: 100%;
    margin-bottom: 20px;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    color: #b91c1c;
    padding: 12px 18px;
    border-radius: 12px;
    border: 1px solid rgba(239, 68, 68, 0.2);
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: fadeIn 0.3s ease-out;
}

/* ─────────────────────────────────────────────────────────────
   8. RESPONSIVE BREAKPOINTS
   ───────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .auth-canvas--split {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 48px 32px;
    }

    .auth-canvas--split .auth-display-title {
        text-align: center;
    }

    .auth-canvas--split .auth-card-container {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .auth-layout {
        padding: 20px 16px 60px;
    }

    .auth-canvas {
        padding: 40px 24px;
        border-radius: 20px;
    }

    .auth-card {
        padding: 24px 20px;
        border-radius: 16px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}