/* style.css */
:root {
  /* Color Palette */
  --primary: #000a1e;
  --primary-container: #002147;
  --on-primary: #ffffff;
  --on-primary-container: #708ab5;

  --secondary: #006d37;
  --secondary-container: #6bfe9c;
  --on-secondary: #ffffff;
  --on-secondary-container: #00743a;

  --secondary-fixed: #6bfe9c;
  --on-secondary-fixed: #00210c;
  --on-secondary-fixed-variant: #005228;

  --tertiary-container: #3d1500;

  --surface: #f7fafc;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f1f4f6;
  --surface-container: #ebeef0;
  --surface-container-high: #e5e9eb;
  --surface-container-highest: #e0e3e5;

  --on-surface: #181c1e;
  --on-surface-variant: #44474e;

  --outline: #74777f;
  --outline-variant: #c4c6cf;

  /* Fonts */
  --font-headline: 'Manrope', sans-serif;
  --font-body: 'Work Sans', sans-serif;
  --font-label: 'Work Sans', sans-serif;

  /* Border Radius */
  --radius-default: 0.25rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-ambient: 0px 20px 40px rgba(0, 10, 30, 0.06);
}

/* Global Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background-color: var(--surface);
  color: var(--on-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-headline);
  font-weight: 700;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.grid {
  display: grid;
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

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

.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.overflow-hidden {
  overflow: hidden;
}

/* Material Symbols */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* --- Components --- */

/* NavBar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(224, 227, 229, 0.5);
  /* surface-container-highest */
  transition: all 0.3s ease;
}

.navbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  max-width: 1280px;
  margin: 0 auto;
}

.navbar__brand {
  font-family: var(--font-headline);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: -0.05em;
}

.navbar__menu {
  display: none;
  gap: 2rem;
  align-items: center;
}

.navbar__menu__apply {
  display: none;
}

.logo {
  display: flex;
  align-items: center;
  gap: 1rem;

  img {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    box-shadow: 2px 2px 4px #0005, -2px -2px 4px #0005;
  }
}

@media (min-width: 768px) {
  .navbar__menu {
    display: flex;
  }

  .navbar__menu__apply {
    display: none;
  }
}

.navbar__link {
  font-family: var(--font-headline);
  font-weight: 700;
  color: var(--primary);
  transition: color 0.3s ease, opacity 0.3s ease;
}

.navbar__link:hover {
  color: var(--secondary);
}

.navbar__link--active {
  color: var(--secondary);
  border-bottom: 2px solid var(--secondary);
  padding-bottom: 0.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.5rem;
  font-family: var(--font-headline);
  font-weight: 700;
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}

.btn:active {
  transform: scale(0.95);
}

.btn--primary {
  background-color: var(--primary-container);
  color: var(--on-primary);
}

.btn--primary:hover {
  opacity: 0.9;
}

.btn--secondary {
  background-color: var(--secondary-fixed);
  color: var(--on-secondary-fixed);
}

.btn--secondary:hover {
  filter: brightness(1.1);
}

.btn--outline {
  background-color: transparent;
  color: var(--on-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn--outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.btn--white {
  background-color: var(--surface-container-lowest);
  color: var(--primary);
}

.btn--large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Mobile Bottom Nav */
.mobile-nav {
  display: flex;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  background-color: var(--primary);
}

@media (min-width: 768px) {
  .mobile-nav {
    display: none;
  }
}

.mobile-nav__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background-color: var(--secondary);
  color: var(--on-secondary);
  width: 100%;
  padding: 0.5rem 1rem;
  font-family: var(--font-body);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.75rem;
}

.mobile-menu-btn {
  display: block;
  color: var(--primary);
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

.main-content {
  padding-top: 3rem;
}

/* Cards & Containers */
.card {
  background-color: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
  box-shadow: var(--shadow-ambient);
}

.card--outlined {
  border: 1px solid rgba(196, 198, 207, 0.15);
  /* outline-variant */
}

/* Typography Utilities */
.text-primary {
  color: var(--primary);
}

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

.text-on-surface {
  color: var(--on-surface);
}

.text-on-surface-variant {
  color: var(--on-surface-variant);
}

.text-white {
  color: #fff;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 3rem;
  }
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--on-surface-variant);
  margin-bottom: 2.5rem;
}

/* Forms */
label.form-label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group {
  display: block;
  margin-bottom: 1rem;
}

.form-actions {
  display: flex;
  justify-content: center;
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  background-color: var(--surface-container-low);
  border: none;
  border-radius: var(--radius-lg);
  padding: 0.5rem;
  color: var(--primary);
  font-family: var(--font-body);
  outline: none;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
}

.form-input:focus {
  border-bottom-color: var(--secondary);
}

/* Grid System */
.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-cols-md-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-cols-md-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .grid-cols-md-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .grid-cols-md-12 {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }
}

/* Backgrounds */
.bg-primary {
  background-color: var(--primary);
}

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

/* Spacing */
.py-20 {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.py-24 {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.mb-8 {
  margin-bottom: 2rem;
}

.mt-8 {
  margin-top: 2rem;
}

/* Footers */
.site-footer {
  background-color: #000a1e;
  padding: 2rem 0 3rem 0;
  color: var(--on-primary);
}

.footer__grid {
  display: flex;
  gap: 2rem;
  width: 100%;
}

.footer__grid>div {
  flex: 1;
  margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
  .footer__grid {
    flex-direction: column;
  }

  .footer__grid>div {
    width: 100%;
  }
}

@media (min-width: 768px) {
  .site-footer {
    padding-bottom: 0.5rem;
  }
}

.footer-link {
  color: #94a3b8;
  font-size: 0.875rem;
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: #fff;
}

.footer-title {
  color: #fff;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.footer-credits {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: #94a3b8;
  padding: 0.5rem 2rem;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal--active {
  display: flex;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 10, 30, 0.6);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  z-index: 101;
  background-color: var(--surface-container-lowest);
  width: 100%;
  max-width: 32rem;
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  animation: modal-pop 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modal-pop {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(1rem);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  color: var(--outline);
}

.modal__close:hover {
  color: var(--error);
}

/* Calculator Input Styling */
.val-input-group {
  display: flex;
  align-items: center;
}

.val-input-group__prefix,
.val-input-group__suffix {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--secondary);
  background: transparent;
  border: none;
  padding: 0.3rem 0rem 0.47rem 0rem;
}

.val-input-group__input {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--secondary);
  background: transparent;
  width: 8rem;
  outline: none;
  border: none;
  padding: 0.3rem 0.1rem 0.8rem 1rem;
  text-align: right;
  transition: all 0.3s ease;
}

/* .val-input-group__suffix {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--secondary);
  margin-left: 0.5rem;
} */