.page-container {
	display: flex;
	flex-flow: row nowrap;
	min-height: 100vh;
	width: 100%;
	background-color: var(--bg-primary);
	background-image: 
		radial-gradient(circle at 15% 20%, rgba(56, 189, 248, 0.08) 0%, transparent 40%),
		radial-gradient(circle at 85% 80%, rgba(99, 102, 241, 0.08) 0%, transparent 40%);
}

/* ========================================================
   LEFT DISPLAY (HERO & SANDBOX PREVIEW)
   ======================================================== */
.left-display {
	flex: 1.2;
	display: flex;
	flex-direction: column;
	justify-content: center;
	padding: 4rem 5rem;
	position: relative;
	border-right: 1px solid var(--border-subtle);
	overflow: hidden;
}

.left-display::before {
	content: '';
	position: absolute;
	top: -100px;
	left: -100px;
	width: 300px;
	height: 300px;
	background: var(--accent-gradient);
	opacity: 0.15;
	filter: blur(80px);
	border-radius: 50%;
	pointer-events: none;
}

.brand-header {
	margin-bottom: 2.5rem;
}

.brand-badge {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.35rem 0.85rem;
	border-radius: 9999px;
	background: rgba(56, 189, 248, 0.1);
	border: 1px solid rgba(56, 189, 248, 0.25);
	color: var(--accent-primary);
	font-size: 0.825rem;
	font-weight: 600;
	letter-spacing: 0.03em;
	margin-bottom: 1.25rem;
}

.brand-badge .pulse-dot {
	width: 8px;
	height: 8px;
	border-radius: 50%;
	background-color: var(--accent-primary);
	box-shadow: 0 0 10px var(--accent-primary);
	animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
	0%, 100% { opacity: 1; transform: scale(1); }
	50% { opacity: 0.4; transform: scale(0.85); }
}

.brand-title {
	font-size: 2.75rem;
	font-weight: 800;
	line-height: 1.15;
	margin-bottom: 1rem;
	letter-spacing: -0.02em;
}

.brand-title .gradient-text {
	background: var(--accent-gradient);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
}

.brand-desc {
	font-size: 1.1rem;
	color: var(--text-secondary);
	max-width: 520px;
	line-height: 1.6;
	margin-bottom: 2.5rem;
}

/* Simulated Code Sandbox Terminal */
.terminal-window {
	background: #090d16;
	border-radius: var(--radius-md);
	border: 1px solid #1e293b;
	box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.03);
	max-width: 580px;
	overflow: hidden;
}

.terminal-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.75rem 1rem;
	background: #0d1424;
	border-bottom: 1px solid #1e293b;
}

.terminal-dots {
	display: flex;
	gap: 6px;
}

.terminal-dots span {
	width: 10px;
	height: 10px;
	border-radius: 50%;
	background: #334155;
}

.terminal-dots span:nth-child(1) { background: #ef4444; }
.terminal-dots span:nth-child(2) { background: #f59e0b; }
.terminal-dots span:nth-child(3) { background: #10b981; }

.terminal-title {
	font-family: var(--font-mono);
	font-size: 0.75rem;
	color: var(--text-muted);
}

.terminal-body {
	padding: 1.25rem;
	font-family: var(--font-mono);
	font-size: 0.85rem;
	line-height: 1.7;
	color: #cbd5e1;
}

.code-keyword { color: #f43f5e; }
.code-fn { color: #38bdf8; }
.code-str { color: #a5f3fc; }
.code-comment { color: #64748b; font-style: italic; }
.code-success { color: #10b981; font-weight: 600; }

.feature-pills {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
	margin-top: 2rem;
}

.pill {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	font-size: 0.8rem;
	color: var(--text-secondary);
	background: rgba(30, 41, 59, 0.6);
	padding: 0.4rem 0.8rem;
	border-radius: var(--radius-sm);
	border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ========================================================
   RIGHT DISPLAY (AUTHENTICATION CARD)
   ======================================================== */
.right-display {
	flex: 0.95;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 3rem 2.5rem;
}

.login-frame {
	width: 100%;
	max-width: 440px;
	background-color: var(--bg-card);
	border: 1px solid var(--border-subtle);
	border-radius: var(--radius-lg);
	padding: 2.5rem 2.25rem;
	box-shadow: var(--shadow-card);
	position: relative;
	backdrop-filter: blur(12px);
}

.auth-header {
	margin-bottom: 2rem;
}

.auth-header h1 {
	font-size: 1.85rem;
	font-weight: 700;
	color: var(--text-primary);
	margin-bottom: 0.5rem;
	letter-spacing: -0.01em;
}

.auth-header p {
	font-size: 0.925rem;
	color: var(--text-secondary);
}

.auth-header p a {
	font-weight: 600;
}

/* FORM ELEMENTS */
.auth-form {
	display: flex;
	flex-direction: column;
	gap: 1.25rem;
}

.form-group {
	display: flex;
	flex-direction: column;
	gap: 0.4rem;
	position: relative;
}

.form-label {
	font-size: 0.875rem;
	font-weight: 600;
	color: var(--text-primary);
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.form-label .required-star {
	color: var(--accent-primary);
	margin-left: 2px;
}

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

.input-icon {
	position: absolute;
	left: 1rem;
	color: var(--text-muted);
	pointer-events: none;
	display: flex;
	align-items: center;
	justify-content: center;
	transition: color 0.2s ease;
}

.form-input {
	width: 100%;
	padding: 0.8rem 1rem 0.8rem 2.75rem;
	background-color: var(--bg-input);
	border: 1px solid var(--border-subtle);
	border-radius: var(--radius-sm);
	color: var(--text-primary);
	font-size: 0.95rem;
	font-family: inherit;
	transition: all 0.2s ease;
	outline: none;
}

.form-input:focus {
	border-color: var(--border-focus);
	box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
	background-color: #0f1a2e;
}

.form-input:focus + .input-icon,
.input-wrapper:focus-within .input-icon {
	color: var(--accent-primary);
}

/* Password Toggle Button */
.password-toggle-btn {
	position: absolute;
	right: 0.75rem;
	background: none;
	border: none;
	color: var(--text-muted);
	cursor: pointer;
	padding: 0.35rem;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: var(--radius-sm);
	transition: color 0.2s ease;
}

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

/* Modern Web Guidance: Validation feedback via :user-invalid */
.error-msg {
	display: none;
	color: var(--error);
	font-size: 0.775rem;
	margin-top: 0.35rem;
	align-items: center;
	gap: 0.35rem;
}

.form-input:user-invalid {
	border-color: var(--error);
	background-color: var(--error-bg);
}

.form-input:user-invalid + .input-icon {
	color: var(--error);
}

.form-input:user-invalid ~ .error-msg,
.form-input.is-invalid ~ .error-msg {
	display: flex;
}

.form-input:required:user-valid {
	border-color: rgba(16, 185, 129, 0.5);
}

/* Options Row (Remember me & Forgot Password) */
.options-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	font-size: 0.85rem;
	color: var(--text-secondary);
}

.checkbox-label {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	cursor: pointer;
	user-select: none;
}

.checkbox-label input[type="checkbox"] {
	width: 16px;
	height: 16px;
	cursor: pointer;
	border-radius: 4px;
}

/* Submit Button */
.btn-primary {
	width: 100%;
	padding: 0.85rem 1.5rem;
	background: var(--accent-gradient);
	color: #ffffff;
	border: none;
	border-radius: var(--radius-sm);
	font-size: 0.975rem;
	font-weight: 700;
	cursor: pointer;
	box-shadow: 0 4px 14px rgba(56, 189, 248, 0.3);
	transition: all 0.2s ease;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 0.5rem;
}

.btn-primary:hover {
	transform: translateY(-1px);
	box-shadow: 0 6px 20px rgba(56, 189, 248, 0.45);
	filter: brightness(1.05);
}

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

/* Divider & Social Login */
.auth-divider {
	display: flex;
	align-items: center;
	text-align: center;
	margin: 1.5rem 0 1.25rem 0;
	color: var(--text-muted);
	font-size: 0.8rem;
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

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

.auth-divider::before { margin-right: 1em; }
.auth-divider::after { margin-left: 1em; }

.btn-secondary {
	width: 100%;
	padding: 0.75rem 1.25rem;
	background: var(--bg-secondary);
	border: 1px solid var(--border-subtle);
	color: var(--text-primary);
	border-radius: var(--radius-sm);
	font-size: 0.9rem;
	font-weight: 600;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 0.65rem;
	transition: all 0.2s ease;
}

.btn-secondary:hover {
	background: var(--bg-card-hover);
	border-color: #334155;
	text-decoration: none;
}

/* Notification banner */
.alert-banner {
	display: none;
	padding: 0.75rem 1rem;
	border-radius: var(--radius-sm);
	font-size: 0.875rem;
	margin-bottom: 1rem;
	align-items: center;
	gap: 0.5rem;
}

.alert-banner.alert-success {
	display: flex;
	background: var(--success-bg);
	border: 1px solid rgba(16, 185, 129, 0.3);
	color: #6ee7b7;
}

/* ========================================================
   RESPONSIVE DESIGN
   ======================================================== */
@media (max-width: 1024px) {
	.page-container {
		flex-direction: column;
	}

	.left-display {
		flex: none;
		border-right: none;
		border-bottom: 1px solid var(--border-subtle);
		padding: 3rem 2rem 2rem 2rem;
		align-items: center;
		text-align: center;
	}

	.brand-desc {
		max-width: 100%;
	}

	.terminal-window {
		display: none;
	}

	.feature-pills {
		justify-content: center;
	}

	.right-display {
		flex: 1;
		padding: 2.5rem 1.5rem;
	}
}

@media (max-width: 480px) {
	.login-frame {
		padding: 1.75rem 1.25rem;
		box-shadow: none;
		border: none;
		background: transparent;
	}

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