/* ===================================================================
    PORTFÓLIO LUCAS PANE - STYLESHEET
    ------------------------------------------------------------------
    1. VARIÁVEIS E GLOBAIS
    2. COMPONENTES E HELPERS
    3. PRELOADER
    4. SCROLL PROGRESS & BACK TO TOP
    5. HEADER / NAVBAR
    6. SEÇÃO HERO
    7. SEÇÃO SOBRE
    8. SEÇÃO HABILIDADES
    9. SEÇÃO PROJETOS
    10. SEÇÃO CONTATO
    11. FOOTER
    12. RESPONSIVIDADE
====================================================================== */

/* ========================
   1. VARIÁVEIS E GLOBAIS
   ======================== */
:root {
    --bg-main: #121212;
    --bg-darker: #0b0b0b;
    --bg-card: #1E1E1E;
    --text-main: #FFFFFF;
    --text-secondary: #B3B3B3;
    --primary-orange: #FF6B00;
    --gradient-orange: linear-gradient(90deg, #FF6B00, #FFA033);
    --border-color: #2a2a2a;
    
    --font-title: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --border-radius: 12px;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-body);
}

.section-title {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 2.5rem;
    color: var(--text-main);
    position: relative;
    padding-bottom: 15px;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-orange);
    border-radius: 2px;
}

/* ========================
   2. COMPONENTES E HELPERS
   ======================== */
.btn-primary-custom {
    background: var(--gradient-orange);
    border: none;
    padding: 14px 32px;
    font-weight: 500;
    font-family: var(--font-title);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 0, 0.2);
}
.btn-primary-custom:hover {
    color: var(--text-main);
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(255, 107, 0, 0.3);
}

.btn-outline-custom {
    border: 2px solid var(--primary-orange);
    color: var(--text-main);
    font-family: var(--font-body);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}
.btn-outline-custom:hover {
    background-color: var(--primary-orange);
    color: var(--text-main);
}

.btn-secondary-custom {
    border: 2px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-weight: 500;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    text-decoration: none;
}
.btn-secondary-custom:hover {
    border-color: var(--primary-orange);
    color: var(--text-main);
    transform: translateY(-4px);
}

/* ========================
   3. PRELOADER
   ======================== */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-darker);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.75s ease, visibility 0.75s;
}
#preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}
#preloader .spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--border-color);
    border-top-color: var(--primary-orange);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========================
   4. SCROLL PROGRESS & BACK TO TOP
   ======================== */
#scroll-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--gradient-orange);
    width: 0%;
    z-index: 9998;
    transition: width 0.1s linear;
}

#back-to-top {
    color: #FFFFFF;
    border: 2px solid #FF6B00;
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.4s ease;
}
#back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ========================
   5. HEADER / NAVBAR
   ======================== */
.navbar {
    background-color: transparent;
    padding: 1rem 0;
    transition: background-color 0.4s ease, padding 0.4s ease, border-bottom 0.4s ease;
}
.navbar.scrolled {
    background-color: rgba(18, 18, 18, 0.85);
    backdrop-filter: blur(10px);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}
.logo {
    font-family: var(--font-title);
    font-weight: 800;
    font-size: 1.8rem;
    text-decoration: none;
}
.logo span { color: var(--primary-orange); }

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    margin: 0 1rem;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-orange);
    transition: width 0.3s ease;
}
.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}
.nav-link.active, .nav-link:hover {
    color: var(--text-main);
}
.navbar-toggler { border: none; }
.navbar-toggler:focus { box-shadow: none; }

/* ========================
   6. SEÇÃO HERO
   ======================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('https://images.unsplash.com/photo-1639507986194-48ef61205b61?ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&q=80&w=1176') no-repeat center center/cover;
    background-attachment: fixed;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(18, 18, 18, 1), rgba(18, 18, 18, 0.8));
}
.hero-section .container { position: relative; z-index: 2; }
.hero-section h1 { font-family: var(--font-title); color: var(--text-main); }
.hero-section .lead { color: var(--text-secondary); max-width: 600px; margin-left: auto; margin-right: auto; }
.scroll-down-arrow { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); z-index: 2; color: var(--text-secondary); animation: bounce 2s infinite; }
.scroll-down-arrow i { width: 28px; height: 28px; }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); } 40% { transform: translateX(-50%) translateY(-20px); } 60% { transform: translateX(-50%) translateY(-10px); } }

/* ========================
   7. SEÇÃO SOBRE
   ======================== */
.about-br { content: " "; display: block; margin-bottom: 1rem; }

/* ========================
   8. SEÇÃO HABILIDADES
   ======================== */
.skill-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    height: 100%;
    transition: all 0.3s ease;
}
.skill-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-orange);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}
.skill-card .icon-lg {
    width: 48px;
    height: 48px;
    color: var(--primary-orange);
}

/* ========================
   9. SEÇÃO PROJETOS
   ======================== */
#projetos h5, #portfolio-gallery h5 { color: #FFFFFF; }
.project-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
}
.project-card .card-img-top { transition: transform 0.4s ease; }
.project-card:hover .card-img-top { transform: scale(1.05); }
.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(11, 11, 11, 0.85);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity 0.4s ease;
}
.project-card:hover .project-overlay { opacity: 1; }
.project-overlay h5 { font-family: var(--font-title); transform: translateY(20px); transition: transform 0.4s ease; }
.project-overlay p { color: var(--text-secondary); transform: translateY(20px); transition: transform 0.4s ease 0.1s; }
.project-overlay .project-links { transform: translateY(20px); transition: transform 0.4s ease 0.2s; }
.project-card:hover .project-overlay h5, .project-card:hover .project-overlay p, .project-card:hover .project-overlay .project-links { transform: translateY(0); }
@media (hover: none) { .project-overlay { opacity: 1; } .project-overlay h5, .project-overlay p, .project-overlay .project-links { transform: translateY(0); } }

/* ========================
   10. SEÇÃO CONTATO (VERSÃO FINAL)
   ======================== */
#contato {
  position: relative;
  z-index: 1;
}

.contact-form {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}
.contact-form:hover {
  border-color: var(--primary-orange);
  box-shadow: 0 0 40px rgba(255, 107, 0, 0.15);
}
.contact-form .form-label {
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.contact-form .form-control {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--border-radius);
  padding: 14px 16px;
  font-size: 1rem;
  transition: all 0.3s ease;
}
.contact-form .form-control::placeholder {
  color: #777;
}
.contact-form .form-control:focus {
  border-color: var(--primary-orange);
  box-shadow: 0 0 8px rgba(255, 107, 0, 0.25);
  outline: none;
}
.form-control.is-invalid {
  border-color: #ff4d4d !important;
  box-shadow: 0 0 6px rgba(255, 77, 77, 0.3);
}
.form-control.is-invalid:focus {
  border-color: #ff6666 !important;
  box-shadow: 0 0 10px rgba(255, 77, 77, 0.4);
}
.invalid-feedback {
  color: #ff6666;
  font-size: 0.9rem;
  margin-top: 5px;
}
.contact-form button {
  width: 100%;
  font-weight: 600;
  font-family: var(--font-title);
  letter-spacing: 1px;
}
.whatsapp-button {
  padding: 16px 40px;
  font-size: 1.1rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: all 0.3s ease;
}
.whatsapp-button:hover {
  border-color: var(--primary-orange);
  transform: translateY(-3px);
  color: var(--text-main);
}

/* MODAL DE FEEDBACK */
#feedbackModal .modal-content {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  color: var(--text-secondary);
  animation: modalFadeIn 0.4s ease;
}
#feedbackModal .modal-header {
  border-bottom: 1px solid var(--border-color);
}
#feedbackModal .modal-title {
  font-family: var(--font-title);
  color: var(--text-main);
}
#feedbackModal .btn-close {
  filter: invert(1) brightness(1.8);
}
#feedbackModal .modal-body {
  font-size: 1.1rem;
}
#feedbackModal .text-success {
  color: #2ecc71 !important;
}
#feedbackModal .text-danger {
  color: #ff4d4d !important;
}
#feedbackModal .text-warning {
  color: #ffc107 !important;
}
@keyframes modalFadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 767.98px) {
  .contact-form { padding: 1.5rem; }
}

/* ========================
   11. FOOTER
   ======================== */
.footer {
    background-color: var(--bg-darker);
}
.social-icons-footer a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-card);
    color: var(--text-main);
    margin: 0 5px;
    transition: all 0.3s ease;
}
.social-icons-footer a:hover {
    background-color: var(--primary-orange);
    transform: translateY(-3px);
}
.copyright {
    color: #777;
}

/* ========================
   12. RESPONSIVIDADE
   ======================== */
@media (max-width: 991.98px) {
    .section-title { font-size: 2rem; }
    .navbar-nav {
        background-color: var(--bg-card);
        border-radius: var(--border-radius);
        padding: 1rem;
        margin-top: 1rem;
        border: 1px solid var(--border-color);
    }
    .nav-link { margin: 0.5rem 0; }
    .hero-section h1 { font-size: 2.5rem; }
}
@media (max-width: 767.98px) {
    .hero-section h1 { font-size: 2rem; }
    .hero-section .btn-lg {
        display: block;
        margin: 10px auto;
        width: 80%;
    }
}