/* Messages PWA — imports shared base then adds app-specific styles */
@import url('/styles/base.css');

@layer app;

@layer app {
	/* Full-screen app layout */
	html,
	body {
		height: 100%;
		overflow: hidden;
	}

	body {
		display: flex;
		flex-direction: column;
		min-height: 100dvh;
	}

	messages-app {
		display: flex;
		flex-direction: column;
		flex: 1;
		height: 100dvh;
		overflow: hidden;
	}

	/* ── No-JS fallback ─────────────────────────────────────────────────── */
	/* Baseline markup shown until app.js boots and removes #ssr-fallback;
	   the full-screen overflow:hidden above is for the JS app shell only. */

	html:has(#ssr-fallback),
	body:has(#ssr-fallback) {
		overflow: visible;
	}

	.ssr-fallback {
		max-width: 40rem;
		margin: 0 auto;
		padding: var(--space-lg) var(--space-md);

		.field {
			display: flex;
			flex-direction: column;
			gap: var(--space-xs);
			margin-bottom: var(--space-md);

			label {
				font-weight: 600;
			}

			input,
			textarea {
				padding: 0.5rem 0.75rem;
				border: 1px solid var(--color-border);
				border-radius: var(--radius);
				background: var(--color-surface);
				color: var(--color-text);
				width: 100%;

				&:focus {
					outline: 2px solid var(--color-accent);
					outline-offset: 1px;
					border-color: transparent;
				}
			}
		}

		button[type='submit'] {
			display: inline-block;
			padding: 0.625rem 1.5rem;
			background: var(--color-accent);
			color: #fff;
			border-radius: var(--radius);
			font-weight: 600;
			border: 2px solid transparent;
			cursor: pointer;

			&:hover {
				background: var(--color-accent-hover);
			}
		}

		.error,
		.success {
			padding: var(--space-sm) var(--space-md);
			border-radius: var(--radius);
			margin-bottom: var(--space-md);
		}

		.error {
			color: var(--color-error);
			border: 1px solid var(--color-error);
		}

		.success {
			color: var(--color-success);
			border: 1px solid var(--color-success);
		}
	}

	/* Loading state */
	.app-loading {
		display: flex;
		flex-direction: column;
		align-items: center;
		justify-content: center;
		flex: 1;
		gap: var(--space-md);
		color: var(--color-text-muted);
	}

	.app-loading__spinner {
		width: 2rem;
		height: 2rem;
		border: 3px solid var(--color-border);
		border-top-color: var(--color-accent);
		border-radius: 50%;
		animation: spin 0.8s linear infinite;
	}

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

	/* ── Auth Screen ─────────────────────────────────────────────────────── */

	auth-screen {
		display: flex;
		flex-direction: column;
		align-items: center;
		justify-content: center;
		flex: 1;
		padding: var(--space-lg);
	}

	.auth-card {
		display: flex;
		flex-direction: column;
		align-items: center;
		gap: var(--space-md);
		background: var(--color-surface);
		border: 1px solid var(--color-border);
		border-radius: var(--radius-lg);
		padding: var(--space-xl) var(--space-lg);
		width: 100%;
		max-width: 400px;

		h1 {
			font-size: 1.75rem;
			text-align: center;
		}

		p {
			text-align: center;
			color: var(--color-text-muted);
			font-size: 0.95rem;
			max-width: 30ch;
		}
	}

	.auth-card__icon {
		width: 80px;
		height: 80px;
		border-radius: 18px;
	}

	.auth-label {
		display: flex;
		flex-direction: column;
		gap: var(--space-xs);
		width: 100%;
		font-weight: 600;
		font-size: 0.875rem;

		&.auth-label--hidden {
			display: none;
		}
	}

	.auth-input {
		padding: 0.5rem 0.75rem;
		border: 1px solid var(--color-border);
		border-radius: var(--radius);
		background: var(--color-bg);
		color: var(--color-text);
		width: 100%;

		&:focus {
			outline: 2px solid var(--color-accent);
			outline-offset: 1px;
			border-color: transparent;
		}
	}

	.auth-divider {
		color: var(--color-text-muted);
		font-size: 0.875rem;
		display: flex;
		align-items: center;
		gap: var(--space-sm);
		width: 100%;

		&::before,
		&::after {
			content: '';
			flex: 1;
			height: 1px;
			background: var(--color-border);
		}
	}

	.auth-error {
		color: var(--color-error);
		font-size: 0.875rem;
		text-align: center;
		padding: var(--space-xs) var(--space-sm);
		border: 1px solid var(--color-error);
		border-radius: var(--radius);
		width: 100%;
	}

	.btn--primary {
		width: 100%;
		justify-content: center;
	}

	.btn--outline {
		width: 100%;
		justify-content: center;
	}

	/* ── Chat View ───────────────────────────────────────────────────────── */

	chat-view {
		display: flex;
		flex-direction: column;
		flex: 1;
		overflow: hidden;
	}

	.chat-header {
		display: flex;
		align-items: center;
		justify-content: space-between;
		padding: var(--space-sm) var(--space-md);
		border-bottom: 1px solid var(--color-border);
		background: var(--color-surface);
		gap: var(--space-sm);
		flex-shrink: 0;

		h1 {
			font-size: 1.125rem;
			font-weight: 700;
			margin: 0;
		}
	}

	.chat-header__title {
		display: flex;
		align-items: center;
		gap: var(--space-sm);
		min-width: 0;
	}

	.chat-header__actions {
		display: flex;
		align-items: center;
		gap: var(--space-xs);
		flex-shrink: 0;
	}

	.chat-header__notif {
		font-size: 1.2rem;
		line-height: 1;
	}

	.chat-layout {
		display: flex;
		flex: 1;
		overflow: hidden;

		&.chat-layout--with-sidebar {
			@media (min-width: 640px) {
				.chat-sidebar {
					display: flex;
					flex-direction: column;
					width: 240px;
					border-right: 1px solid var(--color-border);
					flex-shrink: 0;
				}
			}
		}
	}

	.chat-sidebar {
		display: none;
		overflow-y: auto;
		background: var(--color-surface);

		@media (min-width: 640px) {
			display: flex;
		}
	}

	.chat-sidebar__title {
		font-size: 0.8rem;
		font-weight: 600;
		text-transform: uppercase;
		letter-spacing: 0.05em;
		color: var(--color-text-muted);
		padding: var(--space-sm) var(--space-md);
		margin: 0;
	}

	.conv-list {
		list-style: none;
		padding: 0;
		margin: 0;
	}

	.conv-item__btn {
		display: flex;
		flex-direction: column;
		gap: 2px;
		width: 100%;
		padding: var(--space-sm) var(--space-md);
		text-align: left;
		background: none;
		border: none;
		cursor: pointer;
		border-radius: 0;
		color: var(--color-text);
		transition: background 0.1s;

		&:hover {
			background: var(--color-bg);
		}

		&.conv-item__btn--active {
			background: color-mix(in srgb, var(--color-accent) 10%, transparent);
		}
	}

	.conv-item__name {
		font-weight: 600;
		font-size: 0.9rem;
		white-space: nowrap;
		overflow: hidden;
		text-overflow: ellipsis;
	}

	.conv-item__preview {
		font-size: 0.8rem;
		color: var(--color-text-muted);
		white-space: nowrap;
		overflow: hidden;
		text-overflow: ellipsis;
	}

	.chat-main {
		display: flex;
		flex-direction: column;
		flex: 1;
		overflow: hidden;
	}

	.chat-messages {
		flex: 1;
		overflow-y: auto;
		padding: var(--space-md);
		display: flex;
		flex-direction: column;
		gap: var(--space-sm);
		scroll-behavior: smooth;
		overscroll-behavior: contain;
	}

	.chat-empty {
		display: flex;
		flex: 1;
		align-items: center;
		justify-content: center;
		text-align: center;
		color: var(--color-text-muted);
		font-size: 0.95rem;
		padding: var(--space-lg);

		&[hidden] {
			display: none;
		}
	}

	/* ── Message Bubbles ─────────────────────────────────────────────────── */

	message-bubble {
		display: flex;
		flex-direction: column;
		gap: 2px;
		max-width: min(72%, 380px);
		view-transition-name: none; /* individual bubbles set their own */

		&[data-sent='true'] {
			align-self: flex-end;

			.bubble__text {
				background: var(--color-accent);
				color: #fff;
				border-radius: var(--radius-lg) var(--radius-lg) var(--space-xs) var(--radius-lg);
			}

			.bubble__meta {
				text-align: right;
			}
		}

		&[data-sent='false'] {
			align-self: flex-start;

			.bubble__text {
				background: var(--color-surface);
				border: 1px solid var(--color-border);
				border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) var(--space-xs);
			}
		}
	}

	.bubble__text {
		padding: var(--space-sm) var(--space-md);
		font-size: 0.95rem;
		line-height: 1.5;
		word-break: break-word;
		white-space: pre-wrap;
		max-width: none;
	}

	.bubble__meta {
		display: flex;
		gap: var(--space-xs);
		align-items: center;
		padding: 0 var(--space-xs);
	}

	.bubble__sender {
		font-size: 0.75rem;
		font-weight: 600;
		color: var(--color-text-muted);
	}

	.bubble__time {
		font-size: 0.7rem;
		color: var(--color-text-muted);
	}

	/* ── Compose Area ────────────────────────────────────────────────────── */

	message-input {
		display: flex;
		align-items: flex-end;
		gap: var(--space-sm);
		padding: var(--space-sm) var(--space-md);
		border-top: 1px solid var(--color-border);
		background: var(--color-surface);
		flex-shrink: 0;
	}

	.compose__input {
		flex: 1;
		padding: 0.5rem 0.75rem;
		border: 1px solid var(--color-border);
		border-radius: var(--radius-lg);
		background: var(--color-bg);
		color: var(--color-text);
		resize: none;
		max-height: 160px;
		line-height: 1.5;
		font-size: 0.95rem;

		&:focus {
			outline: 2px solid var(--color-accent);
			outline-offset: 1px;
			border-color: transparent;
		}

		&:disabled {
			opacity: 0.5;
		}
	}

	.compose__send {
		width: 40px;
		height: 40px;
		border-radius: 50%;
		padding: 0;
		flex-shrink: 0;

		svg {
			width: 18px;
			height: 18px;
		}
	}

	/* ── Install banner ──────────────────────────────────────────────────── */

	.install-banner {
		display: flex;
		align-items: center;
		gap: var(--space-sm);
		padding: var(--space-sm) var(--space-md);
		background: color-mix(in srgb, var(--color-accent) 10%, var(--color-surface));
		border-bottom: 1px solid color-mix(in srgb, var(--color-accent) 30%, var(--color-border));
		font-size: 0.875rem;
		flex-shrink: 0;

		p {
			flex: 1;
			margin: 0;
			max-width: none;
			color: var(--color-text);
		}

		.btn {
			font-size: 0.8rem;
			padding: 0.3rem 0.8rem;
		}

		.btn--ghost {
			font-size: 1rem;
			padding: 0.3rem;
		}
	}

	/* ── View transitions ────────────────────────────────────────────────── */

	@view-transition {
		navigation: auto;
	}

	::view-transition-old(root),
	::view-transition-new(root) {
		animation-duration: 0.25s;
	}

	/* New message slide-in from bottom */
	@keyframes bubble-in {
		from {
			opacity: 0;
			transform: translateY(8px) scale(0.98);
		}
		to {
			opacity: 1;
			transform: none;
		}
	}

	::view-transition-new(msg-new) {
		animation: bubble-in 0.2s ease-out;
	}
}