@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700;9..144,800&display=swap');
@import url(fontawesome-all.min.css);

/*
	Tortora.DEV - Modern Design System
	Custom designed for cybersecurity professional portfolio
	Built with modern CSS features, accessibility, and performance in mind
*/

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */

:root {
	/* Color Palette - Dark Mode Primary */

	/* Accent Color - Rust */
	--color-accent: #bf5b32;
	--color-accent-light: #d97a52;
	--color-accent-dark: #9c4726;

	/* Back-compat aliases: pages not yet reworked reference var(--color-cyan) /
	   var(--color-teal) directly inline. Point them at the new accent so those
	   pages render correctly before their own task lands. */
	--color-cyan: var(--color-accent);
	--color-cyan-light: var(--color-accent-light);
	--color-cyan-dark: var(--color-accent-dark);
	--color-teal: var(--color-accent);
	--color-teal-light: var(--color-accent-light);

	/* Semantic Colors - Light Mode Primary */
	--color-text-primary: #1a1d24;
	--color-text-secondary: #4a5160;
	--color-text-tertiary: #6b7280;
	--color-bg-primary: #ffffff;
	--color-bg-secondary: #f7f9fc;
	--color-bg-tertiary: #eef1f6;
	--color-border: #e2e5ea;
	--color-accent-text: #9c4726;

	/* Utility Colors */
	--color-success: #4ade80;
	--color-warning: #fbbf24;
	--color-error: #f87171;
	--color-white: #ffffff;
	--color-black: #000000;

	/* Gradients - Monochrome */
	--gradient-primary: linear-gradient(135deg, #f7f9fc 0%, #eef1f6 100%);
	--gradient-accent: linear-gradient(135deg, #bf5b32 0%, #d97a52 100%);
	--gradient-hero: linear-gradient(135deg, #ffffff 0%, #f7f9fc 55%, #eef1f6 100%);
	--gradient-card: linear-gradient(135deg, rgba(191, 91, 50, 0.03) 0%, rgba(191, 91, 50, 0.06) 100%);

	/* Typography */
	--font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
	--font-display: 'Fraunces', Georgia, 'Times New Roman', serif;

	--font-size-xs: 0.75rem;      /* 12px */
	--font-size-sm: 0.875rem;     /* 14px */
	--font-size-base: 1rem;       /* 16px */
	--font-size-lg: 1.125rem;     /* 18px */
	--font-size-xl: 1.25rem;      /* 20px */
	--font-size-2xl: 1.5rem;      /* 24px */
	--font-size-3xl: 1.875rem;    /* 30px */
	--font-size-4xl: 2.25rem;     /* 36px */
	--font-size-5xl: 3rem;        /* 48px */
	--font-size-6xl: 3.75rem;     /* 60px */
	--font-size-7xl: 4.5rem;      /* 72px */

	--font-weight-light: 300;
	--font-weight-normal: 400;
	--font-weight-medium: 500;
	--font-weight-semibold: 600;
	--font-weight-bold: 700;
	--font-weight-extrabold: 800;

	--line-height-tight: 1.2;
	--line-height-snug: 1.375;
	--line-height-normal: 1.5;
	--line-height-relaxed: 1.625;
	--line-height-loose: 2;

	/* Spacing */
	--space-1: 0.25rem;   /* 4px */
	--space-2: 0.5rem;    /* 8px */
	--space-3: 0.75rem;   /* 12px */
	--space-4: 1rem;      /* 16px */
	--space-5: 1.25rem;   /* 20px */
	--space-6: 1.5rem;    /* 24px */
	--space-8: 2rem;      /* 32px */
	--space-10: 2.5rem;   /* 40px */
	--space-12: 3rem;     /* 48px */
	--space-16: 4rem;     /* 64px */
	--space-20: 5rem;     /* 80px */
	--space-24: 6rem;     /* 96px */

	/* Border Radius */
	--radius-sm: 0.25rem;
	--radius-md: 0.5rem;
	--radius-lg: 0.75rem;
	--radius-xl: 1rem;
	--radius-2xl: 1.5rem;
	--radius-full: 9999px;

	/* Shadows */
	--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
	--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
	--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
	--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
	--shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
	--shadow-glow: 0 4px 20px rgba(26, 29, 36, 0.06);
	--shadow-glow-lg: 0 10px 40px rgba(26, 29, 36, 0.10);

	/* Transitions */
	--transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
	--transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
	--transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
	--transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);

	/* Z-index scale */
	--z-base: 1;
	--z-dropdown: 100;
	--z-sticky: 200;
	--z-fixed: 300;
	--z-modal-backdrop: 400;
	--z-modal: 500;
	--z-popover: 600;
	--z-tooltip: 700;
}

/* Dark theme (preserved, opt-in via <html data-theme="dark">; no UI ships yet) */
[data-theme="dark"] {
	--color-text-primary: #f3f1ea;
	--color-text-secondary: #b4ada0;
	--color-text-tertiary: #756d5f;
	--color-bg-primary: #12151c;
	--color-bg-secondary: #181b22;
	--color-bg-tertiary: #20242c;
	--color-border: #262932;

	--gradient-primary: linear-gradient(135deg, #1a2332 0%, #2d3142 100%);
	--gradient-hero: linear-gradient(135deg, #12151c 0%, #0d0f14 100%);
	--gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.05) 100%);
	--shadow-glow: 0 0 20px rgba(255, 255, 255, 0.1);
	--shadow-glow-lg: 0 0 40px rgba(255, 255, 255, 0.15);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

*, *::before, *::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

html {
	scroll-behavior: smooth;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

body {
	font-family: var(--font-primary);
	font-size: var(--font-size-base);
	font-weight: var(--font-weight-normal);
	line-height: var(--line-height-normal);
	color: var(--color-text-primary);
	background-color: var(--color-bg-primary);
	overflow-x: hidden;
	transition: background-color var(--transition-base), color var(--transition-base);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
	font-family: var(--font-display);
	font-weight: var(--font-weight-bold);
	line-height: var(--line-height-tight);
	margin-bottom: var(--space-4);
	color: var(--color-text-primary);
}

h1 {
	font-size: var(--font-size-5xl);
	font-weight: var(--font-weight-extrabold);
	letter-spacing: -0.025em;
}

h2 {
	font-size: var(--font-size-4xl);
	font-weight: var(--font-weight-bold);
	letter-spacing: -0.02em;
}

h3 {
	font-size: var(--font-size-3xl);
	font-weight: var(--font-weight-bold);
}

h4 {
	font-size: var(--font-size-2xl);
	font-weight: var(--font-weight-semibold);
}

h5 {
	font-size: var(--font-size-xl);
	font-weight: var(--font-weight-semibold);
}

h6 {
	font-size: var(--font-size-lg);
	font-weight: var(--font-weight-semibold);
}

p {
	margin-bottom: var(--space-4);
	color: var(--color-text-secondary);
	line-height: var(--line-height-relaxed);
}

a {
	color: var(--color-accent-text);
	text-decoration: none;
	transition: color var(--transition-fast);
}

a:hover {
	color: var(--color-accent-text);
	text-decoration: underline;
}

strong, b {
	font-weight: var(--font-weight-semibold);
	color: var(--color-text-primary);
}

em, i {
	font-style: italic;
}

code {
	font-family: 'Courier New', monospace;
	background-color: var(--color-bg-tertiary);
	padding: var(--space-1) var(--space-2);
	border-radius: var(--radius-sm);
	font-size: 0.9em;
}

/* ============================================
   LAYOUT COMPONENTS
   ============================================ */

.container {
	width: 100%;
	max-width: 1280px;
	margin: 0 auto;
	padding: 0 var(--space-6);
}

.container-narrow {
	max-width: 960px;
}

.container-wide {
	max-width: 1440px;
}

.section {
	padding: var(--space-20) 0;
	position: relative;
}

.section-sm {
	padding: var(--space-12) 0;
}

.section-lg {
	padding: var(--space-24) 0;
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: var(--z-fixed);
	background-color: rgba(255, 255, 255, 0.85);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--color-border);
	transition: all var(--transition-base);
}

.navbar.scrolled {
	background-color: rgba(255, 255, 255, 0.95);
	box-shadow: var(--shadow-lg);
}

.navbar-container {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 80px;
	padding: 0 var(--space-6);
}

.navbar-brand {
	font-family: var(--font-display);
	font-size: var(--font-size-xl);
	font-weight: var(--font-weight-bold);
	color: var(--color-text-primary);
	text-decoration: none;
	transition: color var(--transition-fast);
}

.navbar-brand:hover {
	color: var(--color-accent-text);
}

.navbar-nav {
	display: flex;
	align-items: center;
	gap: var(--space-8);
	list-style: none;
}

.navbar-nav a {
	color: var(--color-text-secondary);
	font-weight: var(--font-weight-medium);
	font-size: var(--font-size-sm);
	text-transform: uppercase;
	letter-spacing: 0.05em;
	transition: color var(--transition-fast);
	position: relative;
	padding: var(--space-2) 0;
}

.navbar-nav a::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	width: 0;
	height: 2px;
	background: var(--gradient-accent);
	transition: width var(--transition-base);
}

.navbar-nav a:hover,
.navbar-nav a.active {
	color: var(--color-accent-text);
}

.navbar-nav a:hover::after,
.navbar-nav a.active::after {
	width: 100%;
}

.navbar-nav .btn::after {
	display: none;
}

.navbar-nav .btn {
	margin-left: var(--space-2);
	padding: var(--space-3) var(--space-6);
}

.navbar-toggle {
	display: none;
	background: none;
	border: none;
	color: var(--color-text-primary);
	font-size: var(--font-size-2xl);
	cursor: pointer;
	padding: var(--space-2);
}

/* Mobile Navigation */
@media (max-width: 768px) {
	.navbar-toggle {
		display: block;
	}

	.navbar-nav {
		position: fixed;
		top: 80px;
		left: 0;
		right: 0;
		flex-direction: column;
		background-color: var(--color-bg-primary);
		padding: var(--space-6);
		gap: var(--space-4);
		transform: translateX(100%);
		transition: transform var(--transition-base);
		box-shadow: var(--shadow-xl);
	}

	.navbar-nav.active {
		transform: translateX(0);
	}
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
	min-height: 100vh;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--gradient-hero);
	position: relative;
	overflow: hidden;
	padding-top: 80px;
}

.hero::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background-image:
		radial-gradient(circle at 20% 50%, rgba(191, 91, 50, 0.05) 0%, transparent 50%),
		radial-gradient(circle at 80% 80%, rgba(191, 91, 50, 0.04) 0%, transparent 50%);
	pointer-events: none;
}

.hero-content {
	position: relative;
	z-index: var(--z-base);
	text-align: center;
	max-width: 900px;
	padding: var(--space-8);
}

.hero-badge {
	display: inline-block;
	background: rgba(191, 91, 50, 0.08);
	border: 1px solid rgba(191, 91, 50, 0.20);
	color: var(--color-accent-text);
	padding: var(--space-2) var(--space-4);
	border-radius: var(--radius-full);
	font-size: var(--font-size-sm);
	font-weight: var(--font-weight-medium);
	text-transform: uppercase;
	letter-spacing: 0.05em;
	margin-bottom: var(--space-6);
}

.hero-title {
	font-size: var(--font-size-7xl);
	font-weight: var(--font-weight-medium);
	color: var(--color-text-primary);
	margin-bottom: var(--space-6);
}

.hero-subtitle {
	font-size: var(--font-size-2xl);
	color: var(--color-text-secondary);
	margin-bottom: var(--space-8);
	line-height: var(--line-height-relaxed);
}

.hero-buttons {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--space-4);
}

.hero-buttons-row {
	display: flex;
	gap: var(--space-4);
	justify-content: center;
	flex-wrap: wrap;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--space-2);
	padding: var(--space-4) var(--space-8);
	font-size: var(--font-size-base);
	font-weight: var(--font-weight-semibold);
	font-family: var(--font-primary);
	text-decoration: none;
	border: none;
	border-radius: var(--radius-lg);
	cursor: pointer;
	transition: all var(--transition-fast);
	white-space: nowrap;
}

.btn-primary {
	background: var(--color-accent);
	color: var(--color-white);
	border: 1px solid var(--color-accent-dark);
	box-shadow: 0 2px 8px rgba(26, 29, 36, 0.15);
}

.btn-primary:hover {
	background: var(--color-accent-dark);
	border-color: var(--color-accent-dark);
	box-shadow: 0 4px 12px rgba(26, 29, 36, 0.20);
}

.btn-secondary {
	background-color: transparent;
	color: var(--color-accent-text);
	border: 2px solid rgba(191, 91, 50, 0.30);
}

.btn-secondary:hover {
	background-color: rgba(191, 91, 50, 0.06);
	border-color: var(--color-accent);
	color: var(--color-accent-text);
}

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

.btn-outline:hover {
	background-color: var(--color-bg-tertiary);
	border-color: var(--color-cyan);
	color: var(--color-accent-text);
}

.btn-lg {
	padding: var(--space-5) var(--space-10);
	font-size: var(--font-size-lg);
}

.btn-sm {
	padding: var(--space-3) var(--space-6);
	font-size: var(--font-size-sm);
}

/* ============================================
   CARDS
   ============================================ */

.card {
	background-color: var(--color-bg-secondary);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-xl);
	padding: var(--space-8);
	transition: all var(--transition-fast);
	position: relative;
}

.card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 3px;
	background: var(--gradient-accent);
	border-radius: var(--radius-xl) var(--radius-xl) 0 0;
	opacity: 0;
	transition: opacity var(--transition-fast);
}

.card:hover {
	border-color: rgba(191, 91, 50, 0.25);
	box-shadow: var(--shadow-md);
}

.card:hover::before {
	opacity: 1;
}

/* ============================================
   GRID LAYOUTS
   ============================================ */

.grid {
	display: grid;
	gap: var(--space-8);
}

.grid-2 {
	grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
	grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
	grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
	.grid-4 {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 768px) {
	.grid-2,
	.grid-3,
	.grid-4 {
		grid-template-columns: 1fr;
	}
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
	background-color: var(--color-bg-secondary);
	border-top: 1px solid var(--color-border);
	padding: var(--space-12) 0 var(--space-6);
}

.footer-content {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: var(--space-8);
	margin-bottom: var(--space-8);
}

.footer-section h4 {
	color: var(--color-text-primary);
	margin-bottom: var(--space-4);
	font-size: var(--font-size-lg);
}

.footer-section p,
.footer-section a {
	color: var(--color-text-secondary);
	font-size: var(--font-size-sm);
	line-height: var(--line-height-relaxed);
}

.footer-links {
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: var(--space-2);
}

.footer-links a:hover {
	color: var(--color-accent-text);
	padding-left: var(--space-2);
}

.footer-social {
	display: flex;
	gap: var(--space-4);
	margin-top: var(--space-4);
}

.social-icon {
	width: 40px;
	height: 40px;
	border-radius: var(--radius-md);
	background-color: var(--color-bg-tertiary);
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--color-text-secondary);
	font-size: var(--font-size-lg);
	transition: all var(--transition-base);
}

.social-icon:hover {
	background-color: var(--color-cyan);
	color: var(--color-white);
	transform: translateY(-2px);
}

.footer-bottom {
	padding-top: var(--space-6);
	border-top: 1px solid var(--color-border);
	text-align: center;
	color: var(--color-text-tertiary);
	font-size: var(--font-size-sm);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeInUp {
	from {
		opacity: 0;
		transform: translateY(30px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@keyframes fadeInDown {
	from {
		opacity: 0;
		transform: translateY(-30px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@keyframes fadeIn {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}

@keyframes slideInLeft {
	from {
		opacity: 0;
		transform: translateX(-30px);
	}
	to {
		opacity: 1;
		transform: translateX(0);
	}
}

@keyframes slideInRight {
	from {
		opacity: 0;
		transform: translateX(30px);
	}
	to {
		opacity: 1;
		transform: translateX(0);
	}
}

/* Scroll reveal: hidden state only applies when JS is active and motion is allowed */
.reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: no-preference) {
	html.js-motion .reveal {
		opacity: 0;
		transform: translateY(16px);
		transition: opacity 500ms cubic-bezier(0.4, 0, 0.2, 1),
		            transform 500ms cubic-bezier(0.4, 0, 0.2, 1);
		will-change: opacity, transform;
	}
	html.js-motion .reveal.active {
		opacity: 1;
		transform: none;
	}
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-text-primary) !important; }
.text-secondary { color: var(--color-text-secondary) !important; }
.text-accent { color: var(--color-accent-text) !important; }

.bg-primary { background-color: var(--color-bg-primary); }
.bg-secondary { background-color: var(--color-bg-secondary); }
.bg-tertiary { background-color: var(--color-bg-tertiary); }

.gradient-text {
	color: var(--color-text-primary);
}

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }

/* ============================================
   RESPONSIVE TYPOGRAPHY
   ============================================ */

@media (max-width: 1024px) {
	:root {
		--font-size-7xl: 3.5rem;
		--font-size-6xl: 3rem;
		--font-size-5xl: 2.5rem;
		--font-size-4xl: 2rem;
	}
}

@media (max-width: 768px) {
	:root {
		--font-size-7xl: 2.5rem;
		--font-size-6xl: 2.25rem;
		--font-size-5xl: 2rem;
		--font-size-4xl: 1.75rem;
		--font-size-3xl: 1.5rem;
	}

	.navbar-container {
		height: 70px;
	}

	.hero {
		padding-top: 70px;
	}

	.section {
		padding: var(--space-12) 0;
	}
}

@media (max-width: 480px) {
	:root {
		--space-6: 1rem;
	}

	.hero-buttons {
		flex-direction: column;
		width: 100%;
	}

	.btn {
		width: 100%;
	}
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border-width: 0;
}

.skip-link {
	position: absolute;
	top: -40px;
	left: 0;
	background: var(--color-accent);
	color: var(--color-bg-primary);
	padding: var(--space-2) var(--space-4);
	z-index: var(--z-tooltip);
	text-decoration: none;
	font-weight: var(--font-weight-semibold);
}

.skip-link:focus {
	top: 0;
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
	outline: 2px solid var(--color-cyan);
	outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.01ms !important;
		scroll-behavior: auto !important;
	}

	.reveal, html.js-motion .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}