/* ==========================================================================
   USP Media - Stylesheet
   Dark, clean, high-end music production aesthetic
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables & Base
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Light Theme */
  --color-bg: #ffffff;
  --color-bg-elevated: #f5f5f7;
  --color-bg-card: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #555566;
  --color-accent-primary: #0066FF;
  --color-accent-secondary: #00D4FF;
  --color-border: rgba(0, 0, 0, 0.1);
  --color-accent-pink: var(--color-accent-primary);
  
  /* Typography */
  --font-display: 'Outfit', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  
  /* Spacing */
  --section-padding: clamp(3rem, 6vw, 5rem);
  --container-max: 1100px;
  --gap: clamp(1rem, 3vw, 2rem);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* --------------------------------------------------------------------------
   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-body);
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
  font-weight: 400;
}

/* Focus states for accessibility */
:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 3px;
}

::selection {
  background: var(--color-accent-primary);
  color: white;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 1.5rem;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

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

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

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 3rem);
}

section {
  padding: var(--section-padding) 0;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-smooth);
}

.header.scrolled {
  padding: 0.75rem 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo img {
  height: 55px;
  width: auto;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.logo-text span {
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: none;
  list-style: none;
  gap: 2rem;
}

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

.nav-links a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-text-muted);
  background: rgba(0, 0, 0, 0.05);
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* --------------------------------------------------------------------------
   Video Section
   -------------------------------------------------------------------------- */
.videos {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

@media (min-width: 640px) {
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .video-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.video-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-card);
  border-radius: 12px;
  overflow: hidden;
  transition: transform var(--transition-smooth);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.video-card:hover {
  transform: translateY(-4px);
}

.video-card:hover .video-play {
  transform: translate(-50%, -50%) scale(1.1);
  background: var(--color-accent-primary);
}

.video-thumb-wrapper {
  position: relative;
  aspect-ratio: 16 / 9;
  cursor: pointer;
}

.video-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--transition-fast);
}

.video-card:hover .video-thumbnail {
  opacity: 0.9;
}

.video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(10px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-smooth);
}

.video-play svg {
  width: 22px;
  height: 22px;
  fill: white;
  margin-left: 3px;
}

.video-info {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  border-top: 1px solid var(--color-border);
}

.video-artist {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.3;
}

.video-title {
  font-weight: 400;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

.video-role {
  font-size: 0.7rem;
  color: var(--color-accent-primary);
  font-weight: 500;
  margin-top: 0.35rem;
}

.video-card iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* --------------------------------------------------------------------------
   Credits Section
   -------------------------------------------------------------------------- */
.credits-list {
  max-width: 800px;
  margin: 0 auto;
}

.credit-item {
  position: relative;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.credit-item:last-child {
  border-bottom: none;
}

.credit-item h3 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent-primary);
  margin-bottom: 0.5rem;
}

.credit-item p {
  font-size: 1rem;
  color: var(--color-text);
  line-height: 1.6;
  margin: 0;
}

.credit-item-collab {
  padding-top: 2rem;
  padding-bottom: 0;
  margin-top: 1rem;
}

.credit-item-collab p {
  font-size: 0.95rem;
  line-height: 1.8;
}

.credit-item-collab strong {
  font-weight: 600;
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Services Section
   -------------------------------------------------------------------------- */
.services {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.service-card {
  padding: 1.5rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  transition: all var(--transition-smooth);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.service-card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  transform: translateY(-4px);
}

.service-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 1rem;
  color: var(--color-accent-primary);
}

.service-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.service-card p {
  font-size: 0.9rem;
  line-height: 1.5;
}

.service-features {
  list-style: none;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.service-features li {
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 4px;
  height: 4px;
  background: var(--color-accent-primary);
  border-radius: 50%;
}

.service-features li:last-child {
  margin-bottom: 0;
}

/* Workflow */
.workflow {
  margin-top: 3rem;
  padding: 2rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  text-align: center;
}

.workflow h3 {
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
}

.workflow-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.workflow-step {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--color-bg-elevated);
  border-radius: 50px;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--color-accent-primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 50%;
}

.step-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

@media (min-width: 768px) {
  .workflow-steps {
    gap: 0.5rem;
  }

  .workflow-step:not(:last-child)::after {
    content: '→';
    margin-left: 0.5rem;
    color: var(--color-text-muted);
  }
}

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 768px) {
  .about-content {
    grid-template-columns: 200px 1fr;
  }
}

.about-image {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-border);
  margin: 0 auto;
}

.about-text p {
  font-size: 1.1rem;
  color: var(--color-text);
  line-height: 1.7;
}

.about-text p + p {
  margin-top: 0.75rem;
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact {
  text-align: center;
}

.contact-intro {
  max-width: 500px;
  margin: 0 auto 2rem;
  font-size: 1.1rem;
}

.contact-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.contact-form {
  max-width: 500px;
  margin: 0 auto;
  text-align: left;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent-primary);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
}

.footer-info {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-social a:hover {
  color: var(--color-accent-primary);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-text);
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Intersection Observer animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  animation: fallbackFadeIn 0.6s ease 0.5s forwards;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
  animation: none;
}

@keyframes fallbackFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --------------------------------------------------------------------------
   Utilities
   -------------------------------------------------------------------------- */
.section-header {
  margin-bottom: 2rem;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}

/* WhatsApp floating button */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: transform var(--transition-fast);
}

.whatsapp-float:hover {
  transform: scale(1.1);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: white;
}

/* Mobile menu */
.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

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

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 767px) {
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  }

  .nav-links.active a {
    font-size: 1.1rem;
    padding: 0.5rem 0;
  }
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
  .header,
  .whatsapp-float,
  .video-card {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}