/* === YDS MODU STİLLERİ === */

/* YDS Overlay — Full Screen */
#ydsOverlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#0a0a0f;z-index:2500;display:none;overflow-y:auto;opacity:0;transition:opacity .3s}
#ydsOverlay.open{display:block;opacity:1}

/* Container */
.yds-container{max-width:600px;margin:0 auto;padding:20px 16px 60px;min-height:100vh}

/* Header */
.yds-header{text-align:center;padding:20px 0 10px;position:relative}
.yds-back-btn{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);color:#fff;width:40px;height:40px;min-width:40px;border-radius:50%;font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s;z-index:10;flex-shrink:0}
.yds-back-btn:hover{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.25)}
.yds-back-btn:active{transform:scale(.9)}
.yds-header .yds-back-btn{position:absolute;left:0;top:20px}
.yds-title{font-size:1.8rem;font-weight:900;background:linear-gradient(135deg,#f59e0b,#ef4444,#8b5cf6);-webkit-background-clip:text;background-clip:text;color:transparent;margin:0;letter-spacing:-1px}
.yds-subtitle{color:#888;font-size:.85rem;margin-top:4px}

/* Stats Bar */
.yds-stats-bar{display:flex;justify-content:space-around;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:16px 10px;margin:20px 0}
.yds-stat{text-align:center}
.yds-stat-num{display:block;font-size:1.4rem;font-weight:800;color:#fff}
.yds-stat-label{font-size:.7rem;color:#888;text-transform:uppercase;letter-spacing:.5px}

/* Section Titles */
.yds-section-title{font-size:.85rem;font-weight:700;color:#aaa;text-transform:uppercase;letter-spacing:1px;margin:24px 0 12px;padding-left:4px}

/* Mode Cards Grid */
.yds-modes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.yds-mode-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:16px 8px;text-align:center;cursor:pointer;transition:all .25s;position:relative;overflow:hidden}
.yds-mode-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--mode-color);opacity:.8}
.yds-mode-card:active{transform:scale(.95)}
.yds-mode-icon{font-size:1.6rem;margin-bottom:6px}
.yds-mode-label{font-size:.72rem;font-weight:700;color:#ddd;line-height:1.2}
.yds-mode-range{font-size:.6rem;color:#888;margin-top:2px}
.yds-mode-progress{position:absolute;top:8px;right:8px;font-size:.6rem;font-weight:800;color:var(--mode-color);background:rgba(0,0,0,.4);padding:2px 6px;border-radius:8px}

/* Exam Mode Buttons */
.yds-exam-modes{display:flex;flex-direction:column;gap:10px}
.yds-exam-btn{display:flex;align-items:center;gap:14px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:16px 18px;cursor:pointer;transition:.2s;text-align:left;color:#fff}
.yds-exam-btn:active{transform:scale(.97)}
.yds-exam-full{border-color:rgba(99,102,241,.3);background:rgba(99,102,241,.08)}
.yds-exam-mini{border-color:rgba(34,197,94,.3);background:rgba(34,197,94,.08)}
.yds-exam-weak{border-color:rgba(239,68,68,.3);background:rgba(239,68,68,.08)}
.yds-exam-icon{font-size:1.8rem}
.yds-exam-label{font-weight:700;font-size:1rem}
.yds-exam-desc{font-size:.75rem;color:#aaa;margin-top:2px}

/* History */
.yds-history{background:rgba(255,255,255,.03);border-radius:12px;overflow:hidden}
.yds-history-item{display:flex;justify-content:space-between;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.06);font-size:.85rem;color:#ccc}
.yds-history-score{font-weight:800;color:#f59e0b}
.yds-empty{padding:24px;text-align:center;color:#666;font-size:.85rem}

/* Question View */
.yds-question-view{padding-top:10px}
.yds-q-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;gap:8px;position:relative}
.yds-q-info{display:flex;align-items:center;gap:8px;flex:1}
.yds-q-type{font-size:.7rem;font-weight:700;color:#fff;padding:4px 10px;border-radius:20px;white-space:nowrap}
.yds-q-counter{font-size:.8rem;color:#888;font-weight:600}
.yds-q-score{font-size:.8rem;white-space:nowrap}

/* Progress Bar */
.yds-progress-bar{height:4px;background:rgba(255,255,255,.08);border-radius:2px;margin-bottom:20px;overflow:hidden}
.yds-progress-fill{height:100%;border-radius:2px;transition:width .4s ease}

/* Passage Box */
.yds-passage{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:16px;font-size:.88rem;line-height:1.7;color:#ccc;margin-bottom:16px;max-height:300px;overflow-y:auto}

/* Question Stem */
.yds-q-stem{font-size:1rem;line-height:1.6;color:#eee;margin-bottom:16px;font-weight:500;white-space:pre-wrap}

/* Strategy Tip */
.yds-strategy-tip{background:rgba(251,191,36,.08);border:1px solid rgba(251,191,36,.2);border-radius:10px;padding:10px 14px;font-size:.78rem;color:#fbbf24;margin-bottom:14px;line-height:1.4}

/* Options */
.yds-options{display:flex;flex-direction:column;gap:8px}
.yds-opt-btn{display:flex;align-items:flex-start;gap:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:14px 16px;cursor:pointer;transition:all .2s;text-align:left;color:#ddd;font-size:.9rem;line-height:1.4;width:100%}
.yds-opt-btn:active:not(:disabled){transform:scale(.98);background:rgba(255,255,255,.1)}
.yds-opt-letter{font-weight:800;color:#888;min-width:22px;height:22px;border-radius:50%;border:1px solid #555;display:flex;align-items:center;justify-content:center;font-size:.75rem;flex-shrink:0;margin-top:1px}
.yds-opt-text{flex:1}

/* Correct/Wrong States */
.yds-opt-correct{background:rgba(34,197,94,.15)!important;border-color:rgba(34,197,94,.5)!important;color:#4ade80!important}
.yds-opt-correct .yds-opt-letter{background:#22c55e;color:#fff;border-color:#22c55e}
.yds-opt-wrong{background:rgba(239,68,68,.15)!important;border-color:rgba(239,68,68,.5)!important;color:#f87171!important}
.yds-opt-wrong .yds-opt-letter{background:#ef4444;color:#fff;border-color:#ef4444}

/* Explanation */
.yds-explanation{margin-top:16px;border-radius:14px;overflow:hidden;animation:ydsSlideUp .3s ease}
@keyframes ydsSlideUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.yds-exp-header{padding:12px 16px;font-weight:700;font-size:1rem;display:flex;justify-content:space-between;align-items:center}
.yds-exp-correct{background:rgba(34,197,94,.15);color:#4ade80}
.yds-exp-wrong{background:rgba(239,68,68,.15);color:#f87171}
.yds-exp-body{padding:12px 16px;font-size:.85rem;line-height:1.6;color:#ccc;background:rgba(255,255,255,.03)}
.yds-exp-tactic{padding:12px 16px;font-size:.8rem;line-height:1.5;color:#fbbf24;background:rgba(251,191,36,.06);border-top:1px solid rgba(251,191,36,.15)}
.yds-next-btn{width:100%;padding:14px;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;border:none;border-radius:0 0 14px 14px;font-size:1rem;font-weight:700;cursor:pointer;transition:.2s}
.yds-next-btn:active{transform:scale(.98)}

/* Results View */
.yds-results-view{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:90vh;gap:24px}
.yds-results-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:40px 32px;text-align:center;width:100%}
.yds-results-grade{width:80px;height:80px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2.2rem;font-weight:900;color:#fff;margin:0 auto 16px}
.yds-results-pct{font-size:3rem;font-weight:900;color:#fff;margin:8px 0}
.yds-results-detail{display:flex;justify-content:center;gap:20px;font-size:.9rem;color:#aaa;margin-top:12px}
.yds-results-advice{margin-top:16px;padding:12px;border-radius:10px;font-size:.85rem;background:rgba(239,68,68,.1);color:#f87171;border:1px solid rgba(239,68,68,.2)}
.yds-advice-good{background:rgba(34,197,94,.1)!important;color:#4ade80!important;border-color:rgba(34,197,94,.2)!important}
.yds-results-actions{display:flex;gap:12px;width:100%}
.yds-action-btn{flex:1;padding:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;color:#fff;font-weight:700;font-size:.95rem;cursor:pointer;transition:.2s}
.yds-action-btn:active{transform:scale(.96)}

/* YDS Button in main app */
.btn-yds{background:linear-gradient(135deg,#f59e0b,#ef4444,#8b5cf6);color:#fff;border:none;font-weight:800;box-shadow:0 4px 15px rgba(245,158,11,.3);animation:ydsGlow 2s infinite alternate}
@keyframes ydsGlow{0%{box-shadow:0 4px 15px rgba(245,158,11,.3)}100%{box-shadow:0 4px 25px rgba(139,92,246,.4)}}

/* Mobile responsive */
@media(max-width:400px){
.yds-modes-grid{grid-template-columns:repeat(2,1fr)}
.yds-title{font-size:1.5rem}
.yds-q-stem{font-size:.9rem}
.yds-opt-btn{padding:11px 13px;font-size:.83rem}
}