/* ===== VARIÁVEIS CSS ===== */
:root {
	/* Cores tema claro */
	--primary-color: #2563eb;
	--secondary-color: #64748b;
	--success-color: #10b981;
	--warning-color: #f59e0b;
	--danger-color: #ef4444;
	--dark-color: #1e293b;
	--light-color: #f8fafc;
	--bg-primary: #ffffff;
	--bg-secondary: #f8f9fa;
	--text-primary: #212529;
	--text-secondary: #6c757d;
	--border-color: #dee2e6;
	
	/* Tipografia */
	--font-family-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
	--font-family-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', 'Courier New', monospace;
	--font-size-base: 1rem;
	--font-size-sm: 0.875rem;
	--font-size-lg: 1.125rem;
	--font-size-xl: 1.25rem;
	--font-size-2xl: 1.5rem;
	--font-size-3xl: 1.875rem;
	--font-size-4xl: 2.25rem;
	--font-size-5xl: 3rem;
	--font-size-6xl: 3.75rem;
	--font-size-7xl: 4.5rem;
	--font-size-8xl: 6rem;
	--font-size-9xl: 8rem;
	--font-weight-normal: 400;
	--font-weight-medium: 500;
	--font-weight-semibold: 600;
	--font-weight-bold: 700;
	
	/* Espaçamentos */
	--spacing-xs: 0.25rem;
	--spacing-sm: 0.5rem;
	--spacing-md: 1rem;
	--spacing-lg: 1.5rem;
	--spacing-xl: 2rem;
	--spacing-2xl: 2.5rem;
	--spacing-3xl: 3rem;
	--spacing-4xl: 4rem;
	
	/* Bordas */
	--border-radius: 0.5rem;
	--border-radius-lg: 0.75rem;
	--border-radius-xl: 1rem;
	
	/* Sombras */
	--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
	--shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
	--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
	--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
	
	/* Transições */
	--transition-fast: 0.15s ease-in-out;
	--transition-normal: 0.3s ease-in-out;
	--transition-slow: 0.5s ease-in-out;
}

/* ===== TEMA ESCURO ===== */
[data-bs-theme="dark"] {
	--primary-color: #3b82f6;
	--secondary-color: #94a3b8;
	--success-color: #22c55e;
	--warning-color: #fbbf24;
	--danger-color: #f87171;
	--dark-color: #f8fafc;
	--light-color: #0f172a;
	--bg-primary: #1e293b;
	--bg-secondary: #334155;
	--text-primary: #f8fafc;
	--text-secondary: #cbd5e1;
	--border-color: #475569;
}

/* ===== ESTILOS GLOBAIS ===== */
* {
	box-sizing: border-box;
}

body {
	font-family: var(--font-family-primary);
	font-size: var(--font-size-base);
	line-height: 1.6;
	color: var(--text-primary);
	background-color: var(--light-color);
	transition: background-color var(--transition-normal), color var(--transition-normal);
	margin: 0;
	padding: 0;
}

/* ===== HEADER MODERNO ===== */
.modern-header {
	padding: var(--spacing-md) 0;
	background-color: var(--bg-primary);
	border-bottom: 1px solid var(--border-color);
	position: sticky;
	top: 0;
	z-index: 1000;
	backdrop-filter: blur(10px);
	transition: all var(--transition-normal);
}

.header-content {
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.header-actions {
	display: flex;
	align-items: center;
	gap: var(--spacing-sm);
}

.project-title {
	font-size: var(--font-size-lg);
	font-weight: var(--font-weight-semibold);
	color: var(--primary-color);
	margin: 0;
	display: flex;
	align-items: center;
	gap: var(--spacing-sm);
}

.theme-toggle {
	background: none;
	border: 2px solid var(--border-color);
	border-radius: var(--border-radius-lg);
	padding: var(--spacing-sm) var(--spacing-md);
	color: var(--text-primary);
	cursor: pointer;
	transition: all var(--transition-fast);
	display: flex;
	align-items: center;
	gap: var(--spacing-xs);
	font-size: var(--font-size-sm);
}

.theme-toggle:hover {
	border-color: var(--primary-color);
	color: var(--primary-color);
	transform: translateY(-1px);
}

/* ===== ÍCONES SVG PERSONALIZADOS ===== */
.icon {
	width: 1.5em;
	height: 1.5em;
	margin-top: -.4em;
	display: inline-block;
	vertical-align: middle;
}

.icon svg {
	width: 100%;
	height: 100%;
	fill: currentColor;
	stroke: currentColor;
	transition: all var(--transition-fast);
}

/* ===== SEÇÃO PRINCIPAL DO TIMER ===== */
.timer-hero {
	min-height: 90vh;
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	align-items: center;
	position: relative;
	overflow: hidden;
	padding: var(--spacing-2xl) 0;
}

.timer-hero::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: radial-gradient(circle at 30% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
				radial-gradient(circle at 70% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
	pointer-events: none;
}

.timer-display-container {
	text-align: center;
	z-index: 2;
	position: relative;
	flex: 1;
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
}

.timer-main-display {
	font-family: var(--font-family-mono);
	font-size: var(--font-size-9xl);
	font-weight: var(--font-weight-bold);
	color: var(--primary-color);
	text-shadow: 0 0 30px rgba(59, 130, 246, 0.3);
	margin: 0;
	line-height: 1;
	letter-spacing: -0.02em;
	transition: all var(--transition-normal);
}

.timer-status {
	font-size: var(--font-size-xl);
	color: var(--text-secondary);
	margin-top: var(--spacing-md);
	font-weight: var(--font-weight-medium);
}

/* ===== INTERFACE COM ABAS ===== */
.timer-tabs {
	z-index: 3;
	width: 100%;
	max-width: 800px;
	position: relative;
}

.nav-tabs {
	border: none;
	justify-content: center;
	margin-bottom: var(--spacing-xl);
}

.nav-tabs .nav-link {
	background: rgba(255, 255, 255, 0.1);
	border: 1px solid var(--border-color);
	color: var(--text-secondary);
	border-radius: var(--border-radius-lg);
	margin: 0 var(--spacing-xs);
	padding: var(--spacing-md) var(--spacing-xl);
	font-weight: var(--font-weight-medium);
	transition: all var(--transition-fast);
	backdrop-filter: blur(10px);
}

.nav-tabs .nav-link:hover {
	background: rgba(59, 130, 246, 0.2);
	border-color: var(--primary-color);
	color: var(--text-primary);
	transform: translateY(-2px);
}

.nav-tabs .nav-link.active {
	background: var(--primary-color);
	border-color: var(--primary-color);
	color: white;
	box-shadow: var(--shadow-lg);
}

.tab-content {
	background: rgba(255, 255, 255, 0.05);
	border-radius: var(--border-radius-xl);
	padding: var(--spacing-2xl);
	backdrop-filter: blur(20px);
	border: 1px solid rgba(255, 255, 255, 0.1);
	min-height: 280px;
	box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

/* Efeito glass melhorado para tema escuro */
[data-bs-theme="dark"] .tab-content {
	background: rgba(30, 41, 59, 0.3);
	border: 1px solid rgba(148, 163, 184, 0.2);
	box-shadow: 0 8px 32px 0 rgba(15, 23, 42, 0.5);
}

/* ===== CONTROLES DO TIMER ===== */
.timer-controls {
	display: flex;
	gap: var(--spacing-md);
	justify-content: center;
	flex-wrap: wrap;
	margin-top: var(--spacing-lg);
}

.timer-input-group {
	display: flex;
	gap: var(--spacing-lg);
	align-items: center;
	justify-content: center;
	flex-wrap: wrap;
	margin-bottom: var(--spacing-lg);
}

.timer-input {
	width: 4rem;
	text-align: center;
	font-size: var(--font-size-lg);
	font-family: var(--font-family-mono);
	background: rgba(255, 255, 255, 0.1);
	border: 2px solid var(--border-color);
	border-radius: var(--border-radius);
	padding: var(--spacing-sm);
	color: var(--text-primary);
	transition: all var(--transition-fast);
}

.timer-input:focus {
	outline: none;
	border-color: var(--primary-color);
	box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input-label {
	font-size: var(--font-size-sm);
	color: var(--text-secondary);
	font-weight: var(--font-weight-medium);
	margin-bottom: var(--spacing-xs);
}

/* ===== RELÓGIO ===== */
.clock-display {
	font-family: var(--font-family-mono);
	font-size: var(--font-size-4xl);
	font-weight: var(--font-weight-bold);
	color: var(--primary-color);
	text-align: center;
	margin-bottom: var(--spacing-lg);
}

.clock-date {
	font-size: var(--font-size-lg);
	color: var(--text-secondary);
	text-align: center;
	margin-bottom: var(--spacing-lg);
}

.clock-format-toggle {
	text-align: center;
}

/* ===== BOTÕES PERSONALIZADOS ===== */
.btn-custom {
	border-radius: var(--border-radius-lg);
	padding: var(--spacing-md) var(--spacing-xl);
	font-weight: var(--font-weight-semibold);
	transition: all var(--transition-fast);
	border: none;
	cursor: pointer;
	display: inline-flex;
	align-items: center;
	gap: var(--spacing-sm);
	font-size: var(--font-size-base);
}

.btn-primary-custom {
	background: linear-gradient(135deg, var(--primary-color), #1d4ed8);
	color: white;
	box-shadow: var(--shadow-md);
}

.btn-primary-custom:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-lg);
}

.btn-success-custom {
	background: linear-gradient(135deg, var(--success-color), #059669);
	color: white;
	box-shadow: var(--shadow-md);
}

.btn-success-custom:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-lg);
}

.btn-warning-custom {
	background: linear-gradient(135deg, var(--warning-color), #d97706);
	color: white;
	box-shadow: var(--shadow-md);
}

.btn-warning-custom:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-lg);
}

.btn-danger-custom {
	background: linear-gradient(135deg, var(--danger-color), #dc2626);
	color: white;
	box-shadow: var(--shadow-md);
}

.btn-danger-custom:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-lg);
}

.btn-outline-custom {
	background: transparent;
	border: 2px solid var(--border-color);
	color: var(--text-primary);
}

.btn-outline-custom:hover {
	background: var(--primary-color);
	border-color: var(--primary-color);
	color: white;
	transform: translateY(-2px);
}

/* ===== SEÇÕES SECUNDÁRIAS ===== */
.content-section {
	background: var(--bg-primary);
	border-radius: var(--border-radius-xl);
	box-shadow: var(--shadow-md);
	padding: var(--spacing-2xl);
	margin: var(--spacing-xl) 0;
	border: 1px solid var(--border-color);
	transition: all var(--transition-normal);
}

.section-title {
	font-size: var(--font-size-2xl);
	font-weight: var(--font-weight-bold);
	color: var(--primary-color);
	margin-bottom: var(--spacing-xl);
	text-align: center;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: var(--spacing-sm);
}

/* ===== COMPARTILHAMENTO ===== */
.share-section {
	background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.1));
	border: 2px dashed var(--primary-color);
	border-radius: var(--border-radius-xl);
	padding: var(--spacing-2xl);
	margin: var(--spacing-xl) 0;
	text-align: center;
}

.share-url {
	background: var(--bg-secondary);
	border: 1px solid var(--border-color);
	border-radius: var(--border-radius-lg);
	padding: var(--spacing-lg);
	margin: var(--spacing-lg) 0;
	font-family: var(--font-family-mono);
	word-break: break-all;
	font-size: var(--font-size-sm);
}

/* ===== ARTIGO ===== */
.article-container {
	background: var(--bg-secondary);
	padding: var(--spacing-4xl) 0;
}

.article {
	padding: var(--spacing-4xl);
	margin: 0 auto;
	line-height: 1.8;
	border: 1px solid var(--border-color);
	border-radius: var(--border-radius-xl);
}

.article .lead {
	font-size: var(--font-size-lg);
	color: var(--text-secondary);
	margin-bottom: var(--spacing-2xl);
	font-weight: var(--font-weight-medium);
}

.article .conclusion {
	background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.1));
	border-left: 4px solid var(--primary-color);
	padding: var(--spacing-lg);
	border-radius: var(--border-radius);
	margin-top: var(--spacing-2xl);
	font-weight: var(--font-weight-medium);
}

.article h2 {
	color: var(--primary-color);
	font-size: var(--font-size-3xl);
	margin-bottom: var(--spacing-xl);
	font-weight: var(--font-weight-bold);
}

.article h3 {
	color: var(--text-primary);
	font-size: var(--font-size-xl);
	margin: var(--spacing-xl) 0 var(--spacing-lg) 0;
	font-weight: var(--font-weight-semibold);
}

.article p {
	margin-bottom: var(--spacing-lg);
	text-align: justify;
	color: var(--text-secondary);
}

/* ===== FOOTER ===== */
.footer {
	background-color: var(--bg-secondary);
	color: var(--text-secondary);
	padding: var(--spacing-2xl) 0;
	text-align: center;
	margin-top: var(--spacing-4xl);
	border-top: 1px solid var(--border-color);
}

.footer a {
	color: var(--primary-color);
	text-decoration: none;
	transition: color var(--transition-fast);
}

.footer a:hover {
	color: var(--success-color);
}

/* ===== ESTADOS DO TIMER ===== */
.timer-running {
	color: var(--success-color) !important;
	text-shadow: 0 0 30px rgba(34, 197, 94, 0.4) !important;
}

.timer-paused {
	color: var(--warning-color) !important;
	text-shadow: 0 0 30px rgba(251, 191, 36, 0.4) !important;
}

.timer-finished {
	color: var(--danger-color) !important;
	text-shadow: 0 0 30px rgba(248, 113, 113, 0.4) !important;
}

/* ===== ANIMAÇÕES ===== */
.pulse {
	animation: pulse 1s infinite;
}

@keyframes pulse {
	0% { opacity: 1; transform: scale(1); }
	50% { opacity: 0.8; transform: scale(1.02); }
	100% { opacity: 1; transform: scale(1); }
}

.fade-in {
	animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
	from { opacity: 0; transform: translateY(20px); }
	to { opacity: 1; transform: translateY(0); }
}

.slide-up {
	animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
	from { transform: translateY(20px); opacity: 0; }
	to { transform: translateY(0); opacity: 1; }
}

/* ===== MODAL DE CONFIGURAÇÕES ===== */
.config-group {
	background: var(--bg-secondary);
	border-radius: var(--border-radius-lg);
	padding: var(--spacing-lg);
	margin-bottom: var(--spacing-lg);
	border: 1px solid var(--border-color);
}

.config-group h6 {
	color: var(--primary-color);
	margin-bottom: var(--spacing-md);
	font-weight: var(--font-weight-semibold);
}

.config-item {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: var(--spacing-sm) 0;
	border-bottom: 1px solid var(--border-color);
}

.config-item:last-child {
	border-bottom: none;
}

.config-item label {
	margin: 0;
	font-weight: var(--font-weight-medium);
}

.shortcut-item {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: var(--spacing-sm) 0;
	border-bottom: 1px solid var(--border-color);
}

.shortcut-item:last-child {
	border-bottom: none;
}

.shortcut-item kbd {
	background: var(--bg-secondary);
	border: 1px solid var(--border-color);
	border-radius: var(--border-radius);
	padding: var(--spacing-xs) var(--spacing-sm);
	font-size: var(--font-size-sm);
	font-family: var(--font-family-mono);
}

/* ===== RESPONSIVIDADE APRIMORADA ===== */

/* Extra Large devices (1400px and up) */
@media (min-width: 1400px) {
	.timer-main-display {
		font-size: 10rem;
	}
	
	.container-xxl {
		max-width: 1320px;
	}
}

/* Large devices (1200px and up) */
@media (max-width: 1399.98px) {
	.timer-main-display {
		font-size: var(--font-size-8xl);
	}
}

/* Medium devices (992px and up) */
@media (max-width: 1199.98px) {
	.timer-main-display {
		font-size: var(--font-size-7xl);
	}
	
	.timer-hero {
		min-height: 85vh;
		padding: var(--spacing-xl) 0;
	}
	
	.tab-content {
		padding: var(--spacing-xl);
		min-height: 250px;
	}
}

/* Small devices (768px and up) */
@media (max-width: 991.98px) {
	.timer-main-display {
		font-size: var(--font-size-6xl);
	}
	
	.timer-hero {
		min-height: 80vh;
		padding: var(--spacing-lg) 0;
	}
	
	.timer-tabs {
		max-width: 95%;
	}
	
	.nav-tabs .nav-link {
		padding: var(--spacing-sm) var(--spacing-lg);
		font-size: var(--font-size-sm);
		margin: 0 var(--spacing-xs);
	}
	
	.tab-content {
		padding: var(--spacing-lg);
		min-height: 220px;
	}
	
	.timer-controls {
		gap: var(--spacing-sm);
	}
	
	.timer-input-group {
		gap: var(--spacing-md);
	}
	
	.content-section {
		padding: var(--spacing-xl);
	}

	.article {
		padding: var(--spacing-2xl);
	}
	
	.section-title {
		font-size: var(--font-size-xl);
	}
}

/* Extra small devices (576px and down) */
@media (max-width: 767.98px) {
	.timer-main-display {
		font-size: var(--font-size-5xl);
	}
	
	.timer-status {
		font-size: var(--font-size-lg);
	}
	
	.clock-display {
		font-size: var(--font-size-2xl);
	}
	
	.header-content {
		flex-direction: column;
		gap: var(--spacing-md);
		text-align: center;
	}
	
	.project-title {
		font-size: var(--font-size-base);
	}
	
	.timer-input-group {
		flex-direction: column;
		gap: var(--spacing-md);
	}

	.nav-tabs {
		flex-direction: column;
		gap: var(--spacing-xs);
	}

	.nav-tabs .nav-link {
		margin: 0;
		width: 100%;
		text-align: center;
	}

	.timer-hero {
		min-height: 75vh;
		padding: var(--spacing-md) 0;
	}
	
	.tab-content {
		padding: var(--spacing-md);
		min-height: 200px;
	}
	
	.timer-controls {
		flex-direction: column;
		align-items: center;
		gap: var(--spacing-sm);
	}
	
	.btn-custom {
		width: 100%;
		max-width: 200px;
		justify-content: center;
	}
	
	.content-section {
		padding: var(--spacing-lg);
		margin: var(--spacing-lg) 0;
	}

	.article {
		padding: var(--spacing-lg);
	}
	
	.section-title {
		font-size: var(--font-size-lg);
		flex-direction: column;
		gap: var(--spacing-xs);
	}
	
	.share-section {
		padding: var(--spacing-lg);
	}
}

/* Ultra small devices (480px and down) */
@media (max-width: 479.98px) {
	.timer-main-display {
		font-size: var(--font-size-4xl);
	}
	
	.timer-status {
		font-size: var(--font-size-base);
	}
	
	.timer-hero {
		min-height: 70vh;
	}
	
	.timer-tabs {
		max-width: 100%;
		padding: 0 var(--spacing-sm);
	}
	
	.tab-content {
		padding: var(--spacing-sm);
	}
	
	.timer-input {
		width: 3.5rem;
		font-size: var(--font-size-base);
	}
}

/* ===== UTILITÁRIOS ===== */
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }
.mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: var(--spacing-sm); }
.hidden { display: none !important; }

/* ===== SCROLLBAR PERSONALIZADA ===== */
::-webkit-scrollbar {
	width: 8px;
}

::-webkit-scrollbar-track {
	background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
	background: var(--border-color);
	border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb:hover {
	background: var(--primary-color);
}

/* ===== EASTER EGG STYLES ===== */
@keyframes rainbow {
	0% { filter: hue-rotate(0deg); }
	100% { filter: hue-rotate(360deg); }
}

.rainbow-mode {
	animation: rainbow 2s infinite;
}