@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Poppins:wght@300;400;500;600;700;800;900&family=Roboto:wght@300;400;500;700;900&display=swap');

/* Custom CSS Variables for Enhanced Theming */
/* Created by Pawan Simha */

:root {
  /* --- Brand Identity --- */
  --color-primary: #ff7a00;
  --color-primary-dark: #cc6200;
  --gradient-primary: linear-gradient(135deg, #ff7a00 0%, #ff9500 100%);
  --gradient-text-primary: linear-gradient(135deg, #ff7a00 0%, #ff5e00 100%);

  /* --- Light Theme (Default) --- */
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-border: #d2d2d7;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.3);
  --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-medium: 0 12px 30px rgba(0, 0, 0, 0.08);
  --shadow-large: 0 20px 40px rgba(0, 0, 0, 0.12);
  --nav-bg: rgba(255, 255, 255, 0.8);
  --nav-bg-scrolled: rgba(255, 255, 255, 0.9);

  /* --- Typography System --- */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-ui: 'Poppins', sans-serif;
  --font-body: 'Roboto', sans-serif;

  /* Border Radii */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
}

[data-theme="dark"] {
  --color-bg: #121212;
  --color-surface: #1e1e1e;
  --color-text-primary: #f5f5f7;
  --color-text-secondary: #a1a1a6;
  --color-border: #333333;
  --glass-bg: rgba(30, 30, 30, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-medium: 0 12px 30px rgba(0, 0, 0, 0.5);
  --shadow-large: 0 20px 40px rgba(0, 0, 0, 0.6);
  --nav-bg: rgba(18, 18, 18, 0.8);
  --nav-bg-scrolled: rgba(18, 18, 18, 0.95);
  --img-brightness: 0.85;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #121212;
    --color-surface: #1e1e1e;
    --color-text-primary: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-border: #333333;
    --glass-bg: rgba(30, 30, 30, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-medium: 0 12px 30px rgba(0, 0, 0, 0.5);
    --shadow-large: 0 20px 40px rgba(0, 0, 0, 0.6);
    --nav-bg: rgba(18, 18, 18, 0.8);
    --nav-bg-scrolled: rgba(18, 18, 18, 0.95);
    --img-brightness: 0.85;
  }
}

html {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
}

/* Base Styles & Resets */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  scroll-behavior: smooth;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

/* Header Navigation */
.header {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 95%;
  max-width: 1200px;
  z-index: 1000;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transition-property: background-color, backdrop-filter, border-color, box-shadow, top, width, transform;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 980px;
  box-shadow: var(--shadow-medium);
}

.header.scrolled {
  top: 10px;
  width: 98%;
  background: var(--nav-bg-scrolled);
  border-color: rgba(255, 122, 0, 0.2);
}

.header.menu-open {
  border-radius: 24px;
}

@media (min-width: 1024px) {
  .header.menu-open {
    border-radius: 980px;
  }
}

.nav-link {
  font-family: var(--font-ui);
  color: var(--color-text-primary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  opacity: 0.8;
}

.nav-link:hover {
  color: var(--color-primary);
  opacity: 1;
}

/* Utility Classes */
.font-display {
  font-family: var(--font-display);
}

.bg-surface {
  background-color: var(--color-surface);
}

.bg-light {
  background-color: var(--color-bg);
}

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

.text-secondary {
  color: var(--color-text-secondary);
}

.border-color {
  border-color: var(--color-border);
}

.shadow-soft {
  box-shadow: var(--shadow-soft);
}

.shadow-medium {
  box-shadow: var(--shadow-medium);
}

.shadow-large {
  box-shadow: var(--shadow-large);
}

/* Gradients & Text */
.gradient-primary {
  background: var(--gradient-primary);
}

.gradient-secondary {
  background: var(--gradient-secondary);
}

.gradient-dark {
  background: var(--gradient-dark);
}

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

/* High Contrast Enforcement */
.bg-surface {
  background-color: var(--color-surface) !important;
  color: var(--color-text-primary) !important;
  transition: all 0.3s ease;
}

img,
svg {
  transition: filter 0.3s ease;
  filter: brightness(var(--img-brightness, 1));
}

.bg-surface h1,
.bg-surface h2,
.bg-surface h3,
.bg-surface h4,
.bg-surface .text-primary {
  color: var(--color-text-primary) !important;
}

.bg-surface p,
.bg-surface .text-secondary {
  color: var(--color-text-secondary) !important;
}

.bg-light {
  background-color: var(--color-light) !important;
}

/* Fix visibility for grey text on white */
.text-gray-300,
.text-secondary {
  color: var(--color-text-secondary) !important;
}

.text-gray-400 {
  color: var(--color-text-secondary);
}

/* Theme Toggle Premium Styles */
#theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-soft);
}

#theme-toggle:hover {
  transform: scale(1.1);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-medium);
}

#theme-toggle i {
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

#theme-toggle:active i {
  transform: rotate(360deg);
}

/* Smooth Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 4px;
}

/* General Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger-1 {
  transition-delay: 0.1s;
}

.stagger-2 {
  transition-delay: 0.2s;
}

.stagger-3 {
  transition-delay: 0.3s;
}

.stagger-4 {
  transition-delay: 0.4s;
}

.stagger-5 {
  transition-delay: 0.5s;
}

.stagger-6 {
  transition-delay: 0.6s;
}

.stagger-7 {
  transition-delay: 0.7s;
}

.stagger-8 {
  transition-delay: 0.8s;
}

.stagger-9 {
  transition-delay: 0.9s;
}

/* --- Lenis Smooth Scroll --- */
html.lenis, html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: hidden;
}

.lenis.lenis-smooth iframe {
  pointer-events: none;
}