:root{--bg-main:#121212;--card-bg:#1e1e1e;--primary:#90caf9;--primary-dark:#42a5f5;--accent-ipc:#311b92;--accent-icse:#004d40;--text-dark:#e0e0e0;--text-light:#b0b0b0;--success:#1b5e20;--success-text:#a5d6a7;--card-border:#333333;--option-bg:#2c2c2c;--option-border:#444444;--navbar-bg:#1e1e1e}*{box-sizing:border-box;margin:0;padding:0}body{font-family:"Nunito",sans-serif;background-color:var(--bg-main);color:var(--text-dark);min-height:100vh;padding-top:90px}.navbar{position:fixed;top:0;left:0;width:100%;height:90px;background-color:var(--navbar-bg);display:flex;align-items:center;justify-content:space-between;padding:0 20px;box-shadow:0 2px 10px rgba(0,0,0,.3);z-index:1000}.navbar-logo{display:flex;align-items:center;gap:12px;font-size:1.2rem;font-weight:700;color:var(--text-dark);text-decoration:none}.navbar-logo img{height:70px;width:auto;object-fit:contain}.navbar-links{display:flex;align-items:center;gap:20px}.navbar-links a{color:var(--text-light);text-decoration:none;font-weight:600;padding:8px 16px;border-radius:8px;transition:all .2s ease}.navbar-links a:hover{color:var(--text-dark);background:rgba(255,255,255,.1)}.navbar-links a.active{color:var(--primary);background:rgba(144,202,249,.1)}.flashcard-container{width:100%;max-width:600px;margin:0 auto;padding:20px;display:flex;flex-direction:column;gap:20px}.flashcard-header{text-align:center;margin-bottom:10px}.flashcard-header h1{margin:0;color:var(--text-dark);font-size:1.5rem}.flashcard-header p{margin:5px 0 0;color:var(--text-light);font-size:.9rem}.progress-container{width:100%;height:10px;background-color:#333;border-radius:10px;overflow:hidden}.progress-bar{height:100%;background-color:var(--primary);width:0;border-radius:10px;transition:width .3s ease}.scene{width:100%;height:60vh;min-height:500px;perspective:1000px}.card{width:100%;height:100%;position:relative;transition:transform .6s cubic-bezier(.4,0,.2,1);transform-style:preserve-3d;cursor:pointer;border-radius:24px;box-shadow:0 8px 30px rgba(0,0,0,.5)}@media(hover:hover){.card:hover{transform:translateY(-5px)}.card.is-flipped:hover{transform:translateY(-5px) rotateY(180deg)}}.card.is-flipped{transform:rotateY(180deg)}.card__face{position:absolute;width:100%;height:100%;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:24px;padding:30px;background:var(--card-bg);border:2px solid var(--card-border);display:flex;flex-direction:column;overflow-y:auto}.card__face--back{transform:rotateY(180deg);background:var(--card-bg);border-color:var(--primary)}.topic-tag{background:var(--accent-ipc);color:#d1c4e9;padding:6px 14px;border-radius:20px;font-size:.85rem;font-weight:700;align-self:flex-start;margin-bottom:15px;flex-shrink:0}.topic-tag.icse{background:var(--accent-icse);color:#b2dfdb}.scroll-content{flex-grow:1;overflow-y:auto;padding-right:5px}.scroll-content::-webkit-scrollbar{width:6px}.scroll-content::-webkit-scrollbar-thumb{background-color:#444;border-radius:10px}.question-text{font-size:1.15rem;font-weight:700;line-height:1.5;color:var(--text-dark);margin-bottom:20px;white-space:pre-line}.options-list{list-style:none;padding:0;margin:0}.options-list li{background:var(--option-bg);border:1px solid var(--option-border);padding:10px 15px;border-radius:10px;margin-bottom:8px;font-size:.95rem;color:var(--text-dark)}.tap-hint{text-align:center;color:var(--text-light);font-size:.9rem;margin-top:15px;padding-top:10px;border-top:1px dashed #444;flex-shrink:0}.answer-box{background:var(--success);padding:20px;border-radius:16px;color:var(--success-text);margin-bottom:15px}.answer-box h3{margin:0 0 10px 0;font-size:1rem;display:flex;align-items:center;gap:8px}.explanation{font-size:.95rem;color:var(--text-dark);line-height:1.6}.controls{display:flex;justify-content:space-between;align-items:center;margin-top:10px;background:var(--card-bg);padding:10px 20px;border-radius:50px;box-shadow:0 4px 20px rgba(0,0,0,.5)}.button-control{background:var(--primary);color:#121212;border:none;width:45px;height:45px;border-radius:50%;font-size:1.1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.button-control:hover{background:var(--primary-dark);transform:scale(1.05)}.button-control:active{transform:scale(.95)}#counter{font-weight:700;color:var(--text-light)}.hero{text-align:center;padding:60px 20px 40px}.hero h1{font-size:2.5rem;margin-bottom:10px;color:var(--primary)}.hero p{font-size:1.1rem;color:var(--text-light);max-width:500px;margin:0 auto}.subjects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1100px;margin:0 auto;padding:20px}@media(max-width:900px){.subjects-grid{grid-template-columns:repeat(2,1fr)}}.subject-card{background:var(--card-bg);border:2px solid var(--card-border);border-radius:20px;padding:30px;text-decoration:none;color:var(--text-dark);transition:all .3s ease;display:flex;flex-direction:column;gap:15px}.subject-card:hover{transform:translateY(-8px);box-shadow:0 12px 40px rgba(0,0,0,.4)}.subject-card.ipc{border-color:rgba(144,202,249,.3)}.subject-card.ipc:hover{border-color:#90caf9;box-shadow:0 12px 40px rgba(144,202,249,.2)}.subject-card.icse{border-color:rgba(77,182,172,.3)}.subject-card.icse:hover{border-color:#4db6ac;box-shadow:0 12px 40px rgba(77,182,172,.2)}.subject-card.disabled{opacity:.5;pointer-events:none}.card-icon{font-size:2.5rem;width:60px;height:60px;display:flex;align-items:center;justify-content:center;border-radius:16px}.ipc .card-icon{background:var(--accent-ipc);color:#d1c4e9}.icse .card-icon{background:var(--accent-icse);color:#b2dfdb}.card-title{font-size:1.5rem;font-weight:700}.card-subtitle{font-size:.9rem;color:var(--text-light);line-height:1.4;flex-grow:1}.card-stats{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text-light);padding-top:10px;border-top:1px solid var(--card-border)}.card-stats i{color:var(--primary)}.badge{background:rgba(255,193,7,.2);color:#ffd54f;padding:4px 10px;border-radius:20px;font-size:.75rem;font-weight:700}.footer{text-align:center;padding:40px 20px;color:var(--text-light);font-size:.85rem}.footer a{color:var(--primary);text-decoration:none}@media(max-width:480px){body{padding-top:80px}.navbar{height:80px;padding:0 15px}.navbar-logo{gap:0}.navbar-logo img{height:60px}.navbar-links a{padding:6px 10px;font-size:.9rem}.hero h1{font-size:1.8rem}.hero p{font-size:1rem}.subjects-grid{grid-template-columns:1fr;padding:15px}.flashcard-container{padding:15px}.scene{height:65vh}.flashcard-header h1{font-size:1.2rem}.question-text{font-size:1.1rem}.card__face{padding:20px}}.action-buttons{display:flex;justify-content:center;gap:12px;margin-bottom:10px}.button-change-materia{display:flex;align-items:center;justify-content:center;gap:8px;padding:8px 16px;background:rgba(144,202,249,.1);border:1px solid rgba(144,202,249,.3);color:#90caf9;border-radius:20px;cursor:pointer;transition:all .3s ease;font-size:.85rem;font-weight:600;text-decoration:none}.button-change-materia:hover{background:rgba(144,202,249,.25);transform:translateY(-2px)}.button-change-materia i{font-size:.8rem}.button-report{display:flex;align-items:center;justify-content:center;gap:8px;padding:8px 16px;background:rgba(255,107,107,.1);border:1px solid rgba(255,107,107,.3);color:#ff6b6b;border-radius:20px;cursor:pointer;transition:all .3s ease;font-size:.85rem;font-weight:600}.button-report:hover{background:rgba(255,107,107,.25);transform:translateY(-2px)}.button-report i{font-size:.8rem}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.8);backdrop-filter:blur(5px);display:none;align-items:center;justify-content:center;z-index:1000;padding:20px}.modal-overlay.active{display:flex}.modal-content{background:var(--card-bg);border-radius:16px;padding:30px;max-width:500px;width:100%;position:relative;animation:slideIn .3s ease;border:1px solid rgba(255,255,255,.1)}@keyframes slideIn{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.modal-close{position:absolute;top:15px;right:15px;background:none;border:none;color:var(--text-light);font-size:1.5rem;cursor:pointer;transition:color .3s}.modal-close:hover{color:#ff6b6b}.modal-content h2{color:#ff6b6b;margin-bottom:10px;font-size:1.4rem}.modal-content h2 i{margin-right:10px}.modal-subtitle{color:var(--text-light);margin-bottom:25px;font-size:.95rem}.form-group{margin-bottom:20px}.form-group label{display:block;color:var(--text-light);margin-bottom:8px;font-weight:600;font-size:.9rem}.form-group input,.form-group textarea{width:100%;padding:12px 15px;background:rgba(0,0,0,.3);border:1px solid rgba(255,255,255,.1);border-radius:10px;color:var(--text);font-size:.95rem;font-family:inherit;transition:border-color .3s}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary)}.form-group textarea{min-height:80px;resize:vertical}.form-group textarea[readonly]{opacity:.7;cursor:not-allowed}.button-submit{width:100%;padding:14px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border:none;border-radius:10px;color:#fff;font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s;display:flex;align-items:center;justify-content:center;gap:10px}.button-submit:hover{transform:translateY(-2px);box-shadow:0 5px 20px rgba(123,97,255,.4)}.button-submit:disabled{opacity:.6;cursor:not-allowed;transform:none}.report-status{margin-top:15px;padding:12px;border-radius:8px;text-align:center;display:none}.report-status.success{display:block;background:rgba(76,175,80,.2);color:#81c784;border:1px solid rgba(76,175,80,.3)}.report-status.error{display:block;background:rgba(244,67,54,.2);color:#e57373;border:1px solid rgba(244,67,54,.3)}.materia-modal h2{color:var(--primary)}.materias-list{display:flex;flex-direction:column;gap:12px}.materia-item{display:flex;align-items:center;gap:15px;padding:15px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.1);border-radius:12px;text-decoration:none;color:var(--text-dark);transition:all .3s ease}.materia-item:hover{background:rgba(255,255,255,.08);transform:translateX(5px);border-color:var(--primary)}.materia-item.active{background:rgba(144,202,249,.1);border-color:var(--primary)}.materia-icon{width:45px;height:45px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}.materia-info{flex-grow:1}.materia-nombre{font-weight:700;font-size:1rem;margin-bottom:3px}.materia-titulo{font-size:.85rem;color:var(--text-light)}.materia-check{color:var(--primary);font-size:1.2rem}

.materia-item.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

@media (max-width: 480px) {
  .modal-content {
    padding: 20px;
    width: 95%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
  }
  
  .materias-list {
    overflow-y: auto;
    padding-right: 5px;
  }

  .materia-item {
    gap: 12px;
    padding: 12px;
  }

  .materia-icon {
    width: 35px;
    height: 35px;
    font-size: 1rem;
  }

  .materia-nombre {
    font-size: 0.95rem;
  }

  .materia-titulo {
    font-size: 0.8rem;
  }

  .materia-check {
    font-size: 1rem;
  }
}

.button-submit {
  background: var(--primary) !important;
}

.social-links {
  display: flex;
  justify-content: center;
  margin-bottom: 5px;
}

.hero {
  padding-bottom: 20px;
}

.tiktok-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: #000000;
  color: #fff;
  padding: 10px 20px;
  border-radius: 30px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: 1px solid #333;
}

.tiktok-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  background-color: #111;
  color: #fff;
}

.tiktok-button i {
  font-size: 1.2rem;
  /* text-shadow: 2px 2px 0px #25F4EE, -2px -2px 0px #FE2C55; */ 
}