/**
 * @fileoverview Main stylesheet for Kotaro the Shiba Portfolio.
 * Organized using a modified SMACSS/BEM architecture.
 * Validated syntax with Google HTML/CSS Style Guide standards.
 * Contains: Design Tokens, Base Resets, Layouts, Components, and Utilities.
 * @author @kotaharus
 */

/* ==========================================================================
   DESIGN TOKENS (CSS Variables)
   Shared constants for brand consistency and easy theming.
   ========================================================================== */
:root {
  --bg-light: #fdfcfb;
  --border-radius: 24px;
  --header-height: 80px;
  --primary-color: #e67e22;
  --primary-dark: #d35400;
  --primary-light: #f39c12;
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.08);
  --text-light: #7f8c8d;
  --text-main: #2c3e50;
  --transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
  --white: #ffffff;
}

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

body {
  -webkit-font-smoothing: antialiased;
  background-color: var(--bg-light);
  color: var(--text-main);
  font-family: 'Poppins', 'Noto Sans JP', sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ==========================================================================
   LAYOUT MODULES (.l-*)
   Major structural containers that define the page grid and sections.
   ========================================================================== */
.l-container {
  margin: 0 auto;
  max-width: 1200px;
  padding: 0 2rem;
  width: 100%;
}

.l-section {
  align-items: center;
  display: flex;
  justify-content: center;
  min-height: 80dvh;
  padding: 120px 0;
  width: 100%;
}

.l-section--zebra:nth-of-type(even) {
  background-color: var(--white);
}

/* ==========================================================================
   COMPONENTS (.c-*)
   Reusable UI elements with independent styling.
   ========================================================================== */
/* --- Header & Nav --- */
.c-header {
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  position: fixed;
  top: 0;
  transition: var(--transition);
  width: 100%;
  z-index: 1000;
}

.c-header.is-scrolled {
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  padding: 0.4rem 0;
}

.c-nav {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1200px;
  padding: 1.2rem 2rem;
}

.c-nav__logo {
  color: var(--primary-color);
  font-size: 1.3rem;
  font-weight: 700;
}

.c-nav__list {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.c-nav__link {
  color: var(--text-main);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: 0.3s;
}

.c-nav__link:hover {
  color: var(--primary-color);
}

.c-nav__link--bone {
  color: var(--primary-color) !important;
  cursor: help;
}

/* --- Buttons --- */
.c-button {
  background: var(--primary-color);
  border-radius: 50px;
  border: 2px solid transparent;
  color: var(--white);
  cursor: pointer;
  display: inline-block;
  font-weight: 700;
  padding: 1.1rem 3.5rem;
  text-align: center;
  text-decoration: none;
  transition: var(--transition);
}

.c-button:hover {
  box-shadow: 0 10px 25px rgba(230, 126, 34, 0.4);
  transform: translateY(-5px);
}

.c-button--outline {
  background-color: transparent;
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.c-button--outline:hover {
  background-color: var(--primary-color);
  color: var(--white);
}

.c-button--submit {
  border: none;
  width: 100%;
}

/* --- Section Title --- */
.c-section-title {
  margin-bottom: 5rem;
  text-align: center;
}

.c-section-title__heading {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.c-section-title__subtext {
  color: var(--text-light);
  font-size: 1.1rem;
}

/* --- Skill Cards & Progress --- */
.c-skill-card {
  background: var(--bg-light);
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 0, 0, 0.03);
  padding: 2.5rem;
  transition: var(--transition);
}

.c-skill-card:hover {
  background: var(--white);
  box-shadow: var(--shadow-md);
  transform: translateY(-10px);
}

.c-skill-card__header {
  display: flex;
  font-weight: 700;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.c-skill-card__desc {
  color: var(--text-light);
  font-size: 0.85rem;
}

.c-progress {
  background: #eee;
  border-radius: 5px;
  height: 10px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.c-progress__fill {
  background: var(--primary-color);
  height: 100%;
  transition: width 1.5s cubic-bezier(0.1, 0, 0.2, 1);
  width: 0;
}

/* --- Gallery Item --- */
.c-gallery-item {
  aspect-ratio: 4/3;
  border-radius: var(--border-radius);
  display: block;
  overflow: hidden;
  position: relative;
}

.c-gallery-item__img {
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
  width: 100%;
}

.c-gallery-item__overlay {
  align-items: center;
  background: rgba(230, 126, 34, 0.9);
  color: var(--white);
  display: flex;
  flex-direction: column;
  inset: 0;
  justify-content: center;
  opacity: 0;
  position: absolute;
  transition: var(--transition);
}

.c-gallery-item__icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.c-gallery-item__label {
  font-size: 1.2rem;
  font-weight: 700;
}

.c-gallery-item:hover .c-gallery-item__img {
  transform: scale(1.1);
}

.c-gallery-item:hover .c-gallery-item__overlay {
  opacity: 1;
}

/* --- Form Components --- */
.c-form__input,
.c-form__textarea {
  border-radius: 15px;
  border: 1px solid #ddd;
  font-family: inherit;
  margin-bottom: 1.5rem;
  padding: 1.2rem;
  transition: 0.3s;
  width: 100%;
}

.c-form__input:focus,
.c-form__textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(230, 126, 34, 0.1);
  outline: none;
}

/* --- Global Footer --- */
.c-footer {
  background: var(--text-main);
  color: var(--bg-light);
  padding: 3.5rem 2rem;
  text-align: center;
}

.c-footer__credits {
  font-size: 0.8rem;
  margin-top: 0.5rem;
  opacity: 0.6;
}

/* ==========================================================================
   PAGE SPECIFIC (.p-*)
   ========================================================================== */

/* --- Hero (Index) --- */
.p-hero {
  align-items: center;
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
    url('../img/hero.webp') center/cover no-repeat;
  color: var(--white);
  display: flex;
  height: 100vh;
  justify-content: center;
  padding: 0;
  text-align: center;
}

.p-hero__title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.p-hero__subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.p-hero__link-hidden {
  color: inherit !important;
  cursor: help;
  text-decoration: none !important;
}

.p-hero__link-hidden:hover,
.p-hero__link-hidden:focus,
.p-hero__link-hidden:active {
  color: inherit !important;
  text-decoration: none !important;
}

/* --- About Grid (Index) --- */
.p-about-grid {
  align-items: center;
  display: grid;
  gap: 4rem;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.p-about-grid__image {
  display: flex;
  justify-content: center;
}

.p-about-grid__img {
  aspect-ratio: 1 / 1;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  max-width: 480px;
  object-fit: cover;
  width: 100%;
}

.p-about-grid__greeting {
  color: var(--primary-color);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.p-about-grid__paragraph + .p-about-grid__paragraph {
  margin-top: 1rem;
}

/* --- Layout Wrappers --- */
.p-skills-container {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.p-gallery-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.p-contact-content {
  display: grid;
  gap: 5rem;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.p-contact-content__details {
  margin-top: 2.5rem;
}

.p-contact-content__item {
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.p-contact-content__item i {
  color: var(--primary-color);
  margin-right: 0.5rem;
}

/* --- Interaction Gimmicks --- */
.u-footprint {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  color: var(--primary-color);
  font-size: 1.5rem;
  opacity: 0;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
  transform-origin: center; 
  animation: footprintFade 2.5s forwards cubic-bezier(0.4, 0, 0.2, 1);
} /* Signature paw print animation */

@keyframes footprintFade {
  0% { opacity: 0; transform: scale(0.5) translate(-50%, -50%) rotate(var(--rotation)); }
  15% { opacity: 0.7; transform: scale(1) translate(-50%, -50%) rotate(var(--rotation)); }
  80% { opacity: 0.7; transform: scale(1) translate(-50%, -50%) rotate(var(--rotation)); }
  100% { opacity: 0; transform: scale(0.8) translate(-50%, -10px) rotate(var(--rotation)); }
}

.c-terminal {
  background: rgba(20, 22, 26, 0.95);
  border-left: 4px solid var(--primary-color);
  border-radius: 8px;
  bottom: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  color: #a9b7c6;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  max-width: 320px;
  opacity: 0;
  padding: 15px;
  position: fixed;
  right: 20px;
  transform: translateY(20px);
  transition: all 0.5s ease;
  width: 90%;
  z-index: 10001;
} /* Post-submission feedback console */

.c-terminal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.c-terminal__header {
  border-bottom: 1px solid #333;
  color: var(--primary-color);
  font-weight: bold;
  margin-bottom: 10px;
  padding-bottom: 5px;
}

.c-terminal__log {
  line-height: 1.4;
  margin: 0;
  min-height: 80px;
}

.c-terminal__cursor {
  animation: blink 1s infinite;
  border-left: 8px solid var(--primary-color);
  display: inline-block;
  height: 12px;
  margin-left: 5px;
  vertical-align: middle;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* ==========================================================================
   UTILITIES (.u-*) & ANIMATIONS
   ========================================================================== */
.u-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.u-reveal.is-active {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive Helpers --- */
@media (max-width: 768px) {
  .l-section {
    padding: 80px 0;
  }

  .c-nav__list {
    display: none;
  }

  .p-about-grid,
  .p-contact-content {
    gap: 3rem;
  }

  .p-hero__title {
    font-size: 3rem;
  }
}