/* ==================== متغیرها و ریست ==================== */
:root{--teal:#10a6b5;--teal-light:#22c0d3;--bg:#f6fbfc;--card:#fff;--muted:#6a7a83;--ink:#163037;--green:#2eb98e;--danger:#e74c3c;--shadow:0 10px 24px rgba(16,166,181,.12);--radius:12px;--radius-lg:18px;--radius-xl:24px;--max-w:900px;--banner-h:40px;--header-h:112px;--tabbar-h:78px}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
    min-height:calc(100% + 1px);
    overflow-x:hidden;
    background:linear-gradient(135deg,#f5f7fa,#f0f8f9);
    color:var(--ink);
    font-family:"Vazirmatn",sans-serif;
    position:relative;
}

/* نوار آبی پشت صفحه - به عرض کامل مرورگر */
body::before{
    content:'';
    position:fixed;
    top:0; left:0;
    width:100%;
    height:130px;
    background:linear-gradient(120deg, #086670 0%, #0b8a96 50%, #10a6b5 100%);
    z-index:0;
}
/* متن «۱۰۰۱ شب» روی همون نوار آبی پشت صفحه */
.site-banner{
    position:fixed;
    top:0; left:0;
    width:100%;
    height:var(--banner-h);
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    font-weight:900;
    font-size:26px;
    letter-spacing:1px;
    z-index:60;
    pointer-events:none;
    text-shadow:0 2px 10px rgba(0,0,0,.35);
    background:linear-gradient(120deg, #086670 0%, #0b8a96 50%, #10a6b5 100%);
    font-family:'Lalezar', 'Vazirmatn', sans-serif;
}

/* دیگه .app قاب فیکس نیست - فقط محدودکننده‌ی عرضه برای محتوای اصلی */
.app{
    max-width:var(--max-w);
    margin:0 auto;
    position:relative;
    z-index:1;
}

/* ==================== هدر بالای اپ - حالا مستقل و فیکس نسبت به viewport ==================== */
.header{
    position:fixed;
    top:var(--banner-h); left:50%;
    transform:translateX(-50%);
    width:100%;
    max-width:var(--max-w);
    z-index:50;color:#fff;padding:26px 20px 30px;
    border-radius:0 0 var(--radius-xl) var(--radius-xl);
    overflow:hidden;
    background:
        radial-gradient(circle at 15% 20%, rgba(255,255,255,.16) 0, transparent 40%),
        radial-gradient(circle at 85% 0%, rgba(255,255,255,.14) 0, transparent 45%),
        linear-gradient(120deg, #22c0d3 0%, #22c0d3 45%, #22c0d3 100%);
    box-shadow:0 14px 30px rgba(21,80,168,.28);
}
.header::before{
    content:'';position:absolute;inset:0;pointer-events:none;opacity:.5;
    background-image:radial-gradient(rgba(255,255,255,.35) 1.5px, transparent 1.5px);
    background-size:18px 18px;
    -webkit-mask-image:linear-gradient(to bottom, rgba(0,0,0,.6), transparent 75%);
    mask-image:linear-gradient(to bottom, rgba(0,0,0,.6), transparent 75%);
}
.header .row{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:14px;font-weight:800;font-size:22px}
.crown{width:46px;height:46px;border-radius:50%;background:#fff;color:var(--teal);display:grid;place-items:center;box-shadow:var(--shadow);font-size:18px;overflow:hidden}
.crown img{width:100%;height:100%;object-fit:contain;padding:4px}
.header-btns{display:flex;gap:10px}
.cart-badge{position:absolute;top:-5px;right:-5px;background:var(--danger);color:#fff;width:20px;height:20px;border-radius:50%;font-size:11px;display:grid;place-items:center}
.cart-badge:empty{display:none}

/* ==================== دکمه‌های عمومی ==================== */
.btn{background:#fff;color:var(--teal);border:none;border-radius:999px;padding:11px 18px;font-weight:700;font-size:14px;cursor:pointer;box-shadow:var(--shadow);transition:.3s;font-family:inherit;display:flex;align-items:center;gap:6px}
.btn:hover{transform:translateY(-2px)}
.btn.cart-btn{position:relative}
.submit-btn{width:100%;padding:16px;background:linear-gradient(135deg,var(--teal),var(--teal-light));color:#fff;border:none;border-radius:var(--radius);font-size:16px;font-weight:700;cursor:pointer;font-family:inherit;transition:.3s}
.submit-btn:hover{transform:translateY(-2px)}
.submit-btn:disabled{opacity:.6;cursor:not-allowed}

/* ==================== ظرف اصلی و صفحات - حالا در جریان عادی صفحه، اسکرول واقعی داره ==================== */
.container{
    max-width:var(--max-w);
    margin:0 auto;
    background:var(--bg);
    min-height:calc(100vh - var(--banner-h));
    padding:calc(var(--banner-h) + var(--header-h) + 20px) 16px calc(var(--tabbar-h) + 20px);
    position:relative;
    z-index:1;
}
.page{display:none}
.page.active{display:block}
.cat-title{margin:25px 4px 12px;font-weight:800;font-size:17px}

.section{margin-top:25px;background:var(--card);border-radius:var(--radius-xl);box-shadow:var(--shadow);overflow:hidden}
.section .h{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;font-weight:800;border-bottom:1px solid rgba(16,166,181,.1)}
.back-btn{display:flex;align-items:center;gap:8px;color:var(--teal);font-weight:700;cursor:pointer;margin-bottom:20px;font-size:14px}

/* ==================== فرم‌های عمومی ==================== */
.checkout-form{background:#fff;border-radius:var(--radius-xl);box-shadow:var(--shadow);padding:20px}
.form-group{margin-bottom:18px}
.form-label{display:block;margin-bottom:8px;font-weight:600;font-size:14px}
.form-input,.form-textarea{width:100%;padding:14px;border:2px solid #e5f3f6;border-radius:var(--radius);font-size:15px;font-family:inherit;transition:.2s}
.form-textarea{min-height:100px;resize:vertical}
.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--teal)}

/* ==================== نوار پایین - Tab Bar - حالا مستقل و فیکس نسبت به viewport ==================== */
.tabbar{
    position:fixed;
    bottom:0; left:50%;
    transform:translateX(-50%);
    width:100%;
    max-width:var(--max-w);
    background:#fff;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    box-shadow:0 -10px 30px rgba(16,166,181,.14);
    z-index:50;
    border-radius:var(--radius-xl) var(--radius-xl) 0 0;
    border-top:3px solid transparent;
    background-image:
        linear-gradient(#fff, #fff),
        linear-gradient(90deg, #086670, #10a6b5, #22c0d3);
    background-origin:border-box;
    background-clip:padding-box, border-box;
}
.tab{
    padding:12px 8px 14px;
    display:grid;
    gap:4px;
    justify-items:center;
    color:#8a9ca5;
    font-weight:600;
    font-size:10px;
    text-decoration:none;
    transition:.25s;
    cursor:pointer;
    border:none;
    background:none;
    font-family:inherit;
    position:relative;
}
.tab.active{color:var(--teal)}
.tab.active::before{
    content:'';
    position:absolute;
    top:4px;
    width:44px;
    height:36px;
    background:rgba(16,166,181,.1);
    border-radius:var(--radius);
    z-index:-1;
}
.tab i{font-size:20px}
.tab .badge{position:absolute;top:8px;right:50%;transform:translateX(50%);margin-right:-15px;background:var(--danger);color:#fff;min-width:16px;height:16px;border-radius:50%;font-size:10px;display:grid;place-items:center}
.tab .badge:empty{display:none}

/* ==================== قالب عمومی مودال ==================== */
.modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:100;align-items:flex-end;justify-content:center;backdrop-filter:blur(5px)}
.modal.active{display:flex}
.modal-content{background:#fff;width:100%;max-width:var(--max-w);border-radius:var(--radius-xl) var(--radius-xl) 0 0;padding:30px 25px;transform:translateY(100%);transition:.4s;position:relative;max-height:90vh;overflow-y:auto}
.modal.active .modal-content{transform:translateY(0)}
.close-btn{position:absolute;top:15px;left:15px;width:36px;height:36px;border-radius:50%;background:rgba(0,0,0,.05);color:var(--muted);cursor:pointer;border:none;display:grid;place-items:center;font-size:20px}
.modal-title{text-align:center;font-size:20px;font-weight:800;color:var(--teal);margin-bottom:8px}
.modal-sub{text-align:center;color:var(--muted);margin-bottom:25px;font-size:14px}

/* ==================== Toast ==================== */
.toast{position:fixed;top:20px;left:50%;transform:translateX(-50%) translateY(-100px);background:#fff;padding:14px 20px;border-radius:var(--radius);box-shadow:var(--shadow);display:flex;align-items:center;gap:10px;opacity:0;transition:.4s;z-index:300;max-width:calc(100% - 40px)}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}
.toast.success{border-right:4px solid var(--green)}
.toast.error{border-right:4px solid var(--danger)}
.toast.info{border-right:4px solid var(--teal)}
.toast i{font-size:18px}
.toast.success i{color:var(--green)}
.toast.error i{color:var(--danger)}
.toast.info i{color:var(--teal)}

/* ==================== Spinner ==================== */
.spinner{display:none;position:fixed;inset:0;background:rgba(255,255,255,.8);z-index:200;place-items:center}
.spinner.active{display:grid}
.spinner::after{content:'';width:50px;height:50px;border:4px solid rgba(16,166,181,.2);border-top-color:var(--teal);border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ==================== ریسپانسیو ==================== */
@media(max-width:380px){
    .brand{font-size:16px}
}