/* ==========================================================================
   Online Exam System — front-end styles
   Namespaced under .oes- to avoid theme / Elementor collisions.
   ========================================================================== */

#oes-exam-app {
	--oes-primary: #046BD2;
	--oes-primary-dark: #0355a8;
	--oes-success: #28a745;
	--oes-danger: #dc3545;
	--oes-bg: #ffffff;
	--oes-surface: #f7f9fc;
	--oes-border: #e2e8f0;
	--oes-text: #1a2433;
	--oes-text-muted: #64748b;
	--oes-radius: 14px;
	--oes-shadow: 0 10px 30px rgba(4, 107, 210, 0.08), 0 2px 8px rgba(15, 23, 42, 0.06);

	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	color: var(--oes-text);
	max-width: 720px;
	margin: 2rem auto;
	padding: 0 1rem;
	box-sizing: border-box;
	position: relative;
}

#oes-exam-app *,
#oes-exam-app *::before,
#oes-exam-app *::after {
	box-sizing: border-box;
}

#oes-exam-app .oes-header {
	display: flex;
	flex-direction: column;
	align-items: center;
	margin-bottom: 1.25rem;
	padding-bottom: 1rem;
	border-bottom: 1px solid var(--oes-border);
	text-align: center;
}

#oes-exam-app .oes-header-logos {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 1.5rem;
	flex-wrap: nowrap;
	margin-bottom: 0.6rem;
}

#oes-exam-app .oes-header-org {
	margin: 0 0 0.2rem;
	font-family: 'UnifrakturMaguntia', cursive;
	font-size: 2.3rem;
	font-weight: 400;
	letter-spacing: 0.01em;
	line-height: 1.2;
	color: #060606;
	text-transform: none;
}

#oes-exam-app .oes-header-est {
	margin: 0 0 0.4rem;
	font-size: 1rem;
	font-weight: 500;
	letter-spacing: 0.01em;
	line-height: 1.4;
	color: var(--oes-text-muted);
	max-width: 580px;
	margin-left: auto;
	margin-right: auto;
}

#oes-exam-app .oes-header-subtitle {
	margin: 0.25rem 0 0;
	font-size: 0.85rem;
	font-weight: 500;
	color: #ababab!important;
}

@media (max-width: 480px) {
	#oes-exam-app .oes-header-org {
		font-size: 1.4rem;
	}
	#oes-exam-app .oes-header-est {
		font-size: 0.65rem;
	}
	#oes-exam-app .oes-header-subtitle {
		font-size: 0.85rem;
	}
}

#oes-exam-app .oes-header-logo {
	max-height: 80px;
	width: auto;
	object-fit: contain;
}

#oes-exam-app .oes-header-logo-right {
	max-height: 64px;
}

@media (max-width: 480px) {
	#oes-exam-app .oes-header-logo-left {
		max-height: 56px;
	}
	#oes-exam-app .oes-header-logo-right {
		max-height: 46px;
	}
}

#oes-exam-app .oes-card {
	background: var(--oes-bg);
	border: 1px solid var(--oes-border);
	border-radius: var(--oes-radius);
	box-shadow: var(--oes-shadow);
	padding: 2rem;
}

@media (max-width: 480px) {
	#oes-exam-app .oes-card {
		padding: 1.25rem;
	}
}

#oes-exam-app .oes-title {
	font-size: 1.5rem;
	font-weight: 700;
	margin: 0 0 0.35rem;
	color: var(--oes-text);
}

#oes-exam-app .oes-subtitle {
	color: var(--oes-text-muted);
	margin: 0 0 1.5rem;
	font-size: 0.95rem;
}

/* ---------- Registration form ---------- */

#oes-exam-app .oes-field {
	margin-bottom: 1.25rem;
}

#oes-exam-app .oes-field label {
	display: block;
	font-weight: 600;
	font-size: 0.875rem;
	margin-bottom: 0.4rem;
	color: var(--oes-text);
}

#oes-exam-app .oes-input {
	width: 100%;
	padding: 0.75rem 0.9rem;
	border: 1.5px solid var(--oes-border);
	border-radius: 10px;
	font-size: 1rem;
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
	background: var(--oes-surface);
}

#oes-exam-app .oes-input:focus {
	outline: none;
	border-color: var(--oes-primary);
	box-shadow: 0 0 0 3px rgba(4, 107, 210, 0.15);
	background: var(--oes-bg);
}

#oes-exam-app .oes-input.oes-input-error {
	border-color: var(--oes-danger);
}

/* ---------- Buttons ---------- */

#oes-exam-app .oes-btn {
	appearance: none;
	border: none;
	border-radius: 10px;
	padding: 0.75rem 1.5rem;
	font-size: 0.95rem;
	font-weight: 600;
	cursor: pointer;
	transition: transform 0.08s ease, box-shadow 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}

#oes-exam-app .oes-btn:active {
	transform: translateY(1px);
}

#oes-exam-app .oes-btn:disabled {
	opacity: 0.55;
	cursor: not-allowed;
	transform: none;
}

#oes-exam-app .oes-btn-primary {
	background: var(--oes-primary);
	color: #fff;
	width: 100%;
}

#oes-exam-app .oes-btn-primary:hover:not(:disabled) {
	background: var(--oes-primary-dark);
}

#oes-exam-app .oes-btn-secondary {
	background: var(--oes-surface);
	color: var(--oes-text);
	border: 1.5px solid var(--oes-border);
}

#oes-exam-app .oes-btn-secondary:hover:not(:disabled) {
	background: #eef2f7;
}

#oes-exam-app .oes-btn-success {
	background: var(--oes-success);
	color: #fff;
}

#oes-exam-app .oes-btn-success:hover:not(:disabled) {
	background: #1f7d37;
}

#oes-exam-app .oes-error {
	color: var(--oes-danger);
	font-size: 0.875rem;
	min-height: 1.1em;
	margin: 0 0 0.75rem;
}

/* ---------- Exam header / progress / timer ---------- */

#oes-exam-app .oes-exam-topbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 0.6rem;
	gap: 0.75rem;
}

#oes-exam-app .oes-exam-header {
	margin-bottom: 1rem;
}

#oes-exam-app .oes-progress-track {
	height: 8px;
	border-radius: 999px;
	background: var(--oes-border);
	overflow: hidden;
}

#oes-exam-app .oes-progress-fill {
	height: 100%;
	width: 2%;
	background: linear-gradient(90deg, var(--oes-primary), #2ea1ff);
	border-radius: 999px;
	transition: width 0.25s ease;
}

#oes-exam-app .oes-progress-label {
	font-size: 0.8rem;
	color: var(--oes-text-muted);
	font-weight: 600;
	white-space: nowrap;
}

#oes-exam-app .oes-timer {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	background: var(--oes-surface);
	border: 1.5px solid var(--oes-border);
	color: var(--oes-text);
	font-weight: 700;
	font-size: 0.9rem;
	font-variant-numeric: tabular-nums;
	padding: 0.3rem 0.75rem;
	border-radius: 999px;
	transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

#oes-exam-app .oes-timer-icon {
	font-size: 0.95rem;
	line-height: 1;
}

#oes-exam-app .oes-timer.oes-timer-warning {
	background: rgba(240, 173, 78, 0.14);
	border-color: rgba(240, 173, 78, 0.5);
	color: #966209;
}

#oes-exam-app .oes-timer.oes-timer-critical {
	background: rgba(220, 53, 69, 0.12);
	border-color: var(--oes-danger);
	color: var(--oes-danger);
	animation: oes-timer-pulse 1s ease-in-out infinite;
}

@keyframes oes-timer-pulse {
	0%, 100% {
		transform: scale(1);
	}
	50% {
		transform: scale(1.06);
	}
}

/* ---------- Question card ---------- */

#oes-exam-app .oes-question-card {
	animation: oes-fade-in 0.2s ease;
}

@keyframes oes-fade-in {
	from {
		opacity: 0;
		transform: translateY(6px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

#oes-exam-app .oes-q-number {
	display: inline-block;
	background: rgba(4, 107, 210, 0.1);
	color: var(--oes-primary);
	font-weight: 700;
	font-size: 0.75rem;
	letter-spacing: 0.03em;
	padding: 0.25rem 0.6rem;
	border-radius: 999px;
	margin-bottom: 0.85rem;
}

#oes-exam-app .oes-q-text {
	font-size: 1.1rem;
	font-weight: 600;
	line-height: 1.5;
	margin: 0 0 1.25rem;
}

#oes-exam-app .oes-options {
	display: flex;
	flex-direction: column;
	gap: 0.6rem;
}

#oes-exam-app .oes-option {
	display: flex;
	align-items: flex-start;
	gap: 0.75rem;
	border: 1.5px solid var(--oes-border);
	border-radius: 10px;
	padding: 0.75rem 0.9rem;
	cursor: pointer;
	transition: border-color 0.15s ease, background 0.15s ease;
	background: var(--oes-surface);
}

#oes-exam-app .oes-option:hover {
	border-color: var(--oes-primary);
}

#oes-exam-app .oes-option.oes-option-selected {
	border-color: var(--oes-primary);
	background: rgba(4, 107, 210, 0.06);
}

#oes-exam-app .oes-option input[type="radio"] {
	margin-top: 0.2rem;
	accent-color: var(--oes-primary);
	flex-shrink: 0;
}

#oes-exam-app .oes-option-letter {
	font-weight: 700;
	color: var(--oes-primary);
	flex-shrink: 0;
}

#oes-exam-app .oes-option-text {
	line-height: 1.4;
}

/* ---------- Navigation ---------- */

#oes-exam-app .oes-exam-nav {
	display: flex;
	gap: 0.75rem;
	margin-top: 1.25rem;
}

#oes-exam-app .oes-exam-nav .oes-btn {
	flex: 1;
}

/* ---------- Loading overlay ---------- */

#oes-exam-app .oes-loading {
	position: absolute;
	inset: 0;
	background: rgba(255, 255, 255, 0.85);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	border-radius: var(--oes-radius);
	z-index: 10;
	gap: 0.75rem;
}

#oes-exam-app .oes-spinner {
	width: 36px;
	height: 36px;
	border: 3px solid var(--oes-border);
	border-top-color: var(--oes-primary);
	border-radius: 50%;
	animation: oes-spin 0.7s linear infinite;
}

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

#oes-exam-app .oes-loading p {
	color: var(--oes-text-muted);
	font-size: 0.9rem;
	margin: 0;
}

/* ---------- Thank you ---------- */

#oes-exam-app .oes-thankyou-card {
	text-align: center;
}

#oes-exam-app .oes-check-icon {
	width: 64px;
	height: 64px;
	line-height: 64px;
	border-radius: 50%;
	background: rgba(40, 167, 69, 0.12);
	color: var(--oes-success);
	font-size: 1.75rem;
	margin: 0 auto 1rem;
}

#oes-exam-app .oes-thankyou-card p {
	color: var(--oes-text-muted);
	margin: 0.35rem 0;
}

/* ---------- Utility ---------- */

#oes-exam-app [hidden] {
	display: none !important;
}