/* ========================================================================
   Perfect Day Hvar - Root CSS Design System
   
   This file contains all design tokens and foundational styles.
   Every color, spacing, typography scale, and animation is defined here.
   
   ======================================================================== */

/* ==================== CSS VARIABLES (DESIGN TOKENS) ==================== */
:root {
  /* ---- COLOR SYSTEM ---- */

  /* Neutral Colors */
  --color-primary-dark: #0f1419; /* Primary dark background */
  --color-primary-light: #1a202c; /* Secondary background */
  --color-text-dark: #0f1419; /* Primary text color */
  --color-text-light: #5a5a5a; /* Secondary text color */
  --color-text-muted: #8b8b8b; /* Tertiary/muted text */
  --color-white: #ffffff; /* Pure white */
  --color-off-white: #f8f7f4; /* Off-white background */
  --color-border: #e0ddd8; /* Border/divider color */

  /* Maritime Accent Colors */
  --color-ocean: #0a5f7f; /* Primary accent (ocean blue) */
  --color-teal: #2fa8ab; /* Secondary accent */
  --color-light: #4ecdc4; /* Light accent (light teal) */
  --color-sky: #87ceeb; /* Sky blue */

  /* ---- TYPOGRAPHY SYSTEM ---- */

  /* Fonts */
  --font-serif: "Georgia", "Garamond", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    sans-serif;
  --font-monospace: "Monaco", "Courier New", monospace;

  /* Font Sizes (REM based, 1rem = 16px) */
  --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: 2rem; /* 32px */
  --font-size-4xl: 2.5rem; /* 40px */
  --font-size-5xl: 3.5rem; /* 56px */
  --font-size-6xl: 4.5rem; /* 72px */

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Line Heights */
  --line-height-tight: 1.1;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;
  --line-height-loose: 1.8;

  /* Letter Spacing */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0em;
  --letter-spacing-wide: 0.02em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;

  /* ---- SPACING SYSTEM (8px base unit) ---- */

  --space-0: 0;
  --space-1: 0.25rem; /* 4px */
  --space-2: 0.5rem; /* 8px */
  --space-3: 0.75rem; /* 12px */
  --space-4: 1rem; /* 16px - base spacing */
  --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 */

  /* ---- LAYOUT SYSTEM ---- */

  --max-width: 1300px; /* Max container width */
  --container-padding: 3rem; /* Desktop padding */
  --container-padding-tablet: 2rem; /* Tablet padding */
  --container-padding-mobile: 1.5rem; /* Mobile padding */

  /* ---- BORDER RADIUS ---- */

  --radius-none: 0;
  --radius-sm: 2px;
  --radius-base: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* ---- SHADOWS ---- */

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-base: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 20px rgba(10, 95, 127, 0.1);
  --shadow-lg: 0 12px 30px rgba(10, 95, 127, 0.15);
  --shadow-xl: 0 20px 40px rgba(10, 95, 127, 0.2);

  /* Ocean-specific shadow (for accent elements) */
  --shadow-ocean: 0 8px 20px rgba(10, 95, 127, 0.2);
  --shadow-teal: 0 12px 30px rgba(47, 168, 171, 0.25);

  /* ---- TRANSITIONS & ANIMATIONS ---- */

  --transition-fast: 0.15s ease-in-out;
  --transition-base: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  --transition-slower: 0.7s ease-in-out;

  /* ---- Z-INDEX SYSTEM ---- */

  --z-dropdown: 1000;
  --z-sticky: 100;
  --z-fixed: 999;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-tooltip: 1070;

  /* ---- BREAKPOINTS (mobile-first) ---- */
  /* Use in media queries: @media (min-width: 768px) */
  --breakpoint-sm: 640px; /* Small devices */
  --breakpoint-md: 768px; /* Tablets */
  --breakpoint-lg: 1024px; /* Desktops */
  --breakpoint-xl: 1280px; /* Large desktops */
  --breakpoint-2xl: 1536px; /* Extra large */
}

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

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-dark);
  background-color: var(--color-white);
  line-height: var(--line-height-relaxed);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1 {
  font-family: var(--font-serif);
  font-size: var(--font-size-6xl); /* 72px */
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  margin-bottom: var(--space-6);
}

h2 {
  font-family: var(--font-serif);
  font-size: var(--font-size-5xl); /* 56px */
  font-weight: var(--font-weight-normal);
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--space-8);
}

h3 {
  font-family: var(--font-serif);
  font-size: var(--font-size-3xl); /* 32px */
  font-weight: var(--font-weight-normal);
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--space-6);
}

h4 {
  font-family: var(--font-sans);
  font-size: var(--font-size-lg); /* 18px */
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
}

h5 {
  font-family: var(--font-sans);
  font-size: var(--font-size-base); /* 16px */
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
}

h6 {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm); /* 14px */
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
}

p {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: var(--line-height-loose);
  margin-bottom: var(--space-6);
}

a {
  color: var(--color-text-dark);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-ocean);
}

small {
  font-size: var(--font-size-sm);
}

strong {
  font-weight: var(--font-weight-bold);
}

/* ==================== CONTAINER ==================== */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.container-sm {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.container-lg {
  max-width: 100%;
  padding: 0 var(--container-padding);
}

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

.button {
  display: inline-block;
  padding: var(--space-4) var(--space-10);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-widest);
  border: 2px solid transparent;
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-sans);
  text-decoration: none;
  text-align: center;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
}

.button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Primary Button */
.button--primary {
  background-color: var(--color-ocean);
  color: var(--color-white);
  border-color: var(--color-ocean);
  box-shadow: var(--shadow-base);
}

.button--primary:hover:not(:disabled) {
  background-color: var(--color-teal);
  border-color: var(--color-teal);
  transform: translateY(-2px);
  box-shadow: var(--shadow-ocean);
}

.button--primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Secondary Button */
.button--secondary {
  background-color: transparent;
  color: var(--color-ocean);
  border-color: var(--color-ocean);
}

.button--secondary:hover:not(:disabled) {
  background-color: var(--color-ocean);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-base);
}

/* Outline Light (for dark backgrounds) */
.button--outline-light {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.button--outline-light:hover:not(:disabled) {
  background-color: var(--color-teal);
  border-color: var(--color-teal);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-teal);
}

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

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

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

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

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

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes waveSlide {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 600px 0;
  }
}

@keyframes heroSlide {
  0%,
  100% {
    background-position: center;
    filter: brightness(1);
  }
  50% {
    background-position: center 30%;
    filter: brightness(1.02);
  }
}

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

/* Display */
.d-block {
  display: block;
}

.d-inline {
  display: inline;
}

.d-inline-block {
  display: inline-block;
}

.d-flex {
  display: flex;
}

.d-grid {
  display: grid;
}

.d-none {
  display: none;
}

/* Spacing */
.mt-1 {
  margin-top: var(--space-1);
}
.mt-2 {
  margin-top: var(--space-2);
}
.mt-4 {
  margin-top: var(--space-4);
}
.mt-6 {
  margin-top: var(--space-6);
}
.mt-8 {
  margin-top: var(--space-8);
}
.mt-12 {
  margin-top: var(--space-12);
}

.mb-1 {
  margin-bottom: var(--space-1);
}
.mb-2 {
  margin-bottom: var(--space-2);
}
.mb-4 {
  margin-bottom: var(--space-4);
}
.mb-6 {
  margin-bottom: var(--space-6);
}
.mb-8 {
  margin-bottom: var(--space-8);
}
.mb-12 {
  margin-bottom: var(--space-12);
}

.p-4 {
  padding: var(--space-4);
}
.p-6 {
  padding: var(--space-6);
}
.p-8 {
  padding: var(--space-8);
}

.px-4 {
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}
.py-4 {
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

/* Text */
.text-center {
  text-align: center;
}

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

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

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

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

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

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

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

/* ==================== RESPONSIVE MEDIA QUERIES ==================== */

/* Tablets (768px and up) */
@media (min-width: 768px) {
  .container {
    padding: 0 var(--container-padding-tablet);
  }

  .hidden-tablet {
    display: none;
  }
}

/* Large screens (1024px and up) */
@media (min-width: 1024px) {
  .hidden-lg {
    display: none;
  }
}

/* Mobile specific (under 768px) */
@media (max-width: 767px) {
  :root {
    font-size: 14px;
  }

  .container {
    padding: 0 var(--container-padding-mobile);
  }

  h1 {
    font-size: var(--font-size-4xl); /* 40px on mobile */
  }

  h2 {
    font-size: var(--font-size-3xl); /* 32px on mobile */
  }

  h3 {
    font-size: var(--font-size-2xl); /* 24px on mobile */
  }

  .hidden-mobile {
    display: none;
  }

  .button {
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-xs);
  }
}

/* ==================== END OF ROOT.CSS ==================== */