@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary: #00bcd4;
  --primary-dark: #0097a7;
  --primary-light: #e0f7fa;
  --primary-lighter: #f0fdff;
  --accent: #0ea5e9;
  --bg: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --text: #1e293b;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07),0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08),0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08),0 8px 10px -6px rgba(0,0,0,0.04);
  --shadow-primary: 0 4px 14px rgba(0,188,212,0.25);
  --radius: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}

/* === Navbar === */
.navbar{background:rgba(255,255,255,0.95);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1000;padding:0 2rem}
.nav-container{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--text)}
.nav-logo .logo-icon{width:32px;height:32px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;font-weight:800}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:8px 16px;border-radius:var(--radius-sm);font-weight:500;font-size:0.88rem;color:var(--text-muted);transition:var(--transition)}
.nav-links a:hover{color:var(--primary)}
.nav-links a.active{color:var(--primary);font-weight:600}
.nav-login-btn{background:var(--primary)!important;color:#fff!important;border-radius:20px!important;padding:7px 20px!important;font-weight:600!important;margin-left:8px}
.nav-login-btn:hover{background:var(--primary-dark)!important}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.hamburger span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}

/* === Hero === */
.hero{padding:5rem 2rem 4rem;text-align:center;background:linear-gradient(180deg,var(--primary-lighter) 0%,#fff 100%);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-40%;right:-15%;width:500px;height:500px;background:radial-gradient(circle,rgba(0,188,212,0.08) 0%,transparent 70%);border-radius:50%;animation:float 10s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-25px) scale(1.03)}}
.hero-content{position:relative;z-index:1;max-width:700px;margin:0 auto}
.hero h1{font-size:2.8rem;font-weight:800;line-height:1.15;margin-bottom:1.2rem;color:var(--text);letter-spacing:-0.02em}
.hero p{font-size:1.05rem;color:var(--text-muted);margin-bottom:2rem;line-height:1.7}
.hero-buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:3rem}
.hero-stats{display:flex;justify-content:center;gap:3rem;flex-wrap:wrap}
.hero-stat h3{font-size:2rem;font-weight:800;color:var(--text)}
.hero-stat p{font-size:0.8rem;color:var(--text-muted);font-weight:500}

/* === Buttons === */
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:0.9rem;border:none;cursor:pointer;transition:var(--transition);font-family:inherit}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-primary)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,188,212,0.35)}
.btn-outline{background:#fff;color:var(--text-secondary);border:1.5px solid var(--border)}
.btn-outline:hover{background:var(--primary-lighter);color:var(--primary);border-color:var(--primary)}
.btn-danger{background:var(--danger);color:#fff;font-size:0.82rem;padding:8px 16px;border-radius:var(--radius-sm)}
.btn-danger:hover{background:#dc2626}
.btn-sm{padding:8px 16px;font-size:0.82rem;border-radius:var(--radius-sm)}

/* === Features === */
.features{padding:4rem 2rem;max-width:1200px;margin:0 auto}
.section-title{text-align:center;margin-bottom:2.5rem}
.section-title h2{font-size:1.8rem;font-weight:700;margin-bottom:0.5rem;color:var(--text)}
.section-title p{color:var(--text-muted);font-size:0.95rem}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;text-align:center;transition:var(--transition)}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(0,188,212,0.2)}
.feature-icon{width:56px;height:56px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin:0 auto 1rem;background:var(--primary-light)}
.feature-card h3{font-size:1.05rem;font-weight:600;margin-bottom:0.5rem}
.feature-card p{color:var(--text-muted);font-size:0.88rem;line-height:1.6}

/* === Services === */
.services-section{padding:4rem 2rem;max-width:1200px;margin:0 auto}
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}
.service-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;text-align:center;transition:var(--transition)}
.service-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--primary)}
.service-icon{font-size:2rem;margin-bottom:0.8rem}
.service-card h3{font-size:0.95rem;font-weight:600;margin-bottom:0.3rem}
.service-card p{font-size:0.8rem;color:var(--text-muted)}

/* === Page Container === */
.page-container{max-width:1200px;margin:0 auto;padding:2.5rem 2rem;flex:1}

/* === Dashboard Layout === */
.dashboard-layout{display:flex;min-height:calc(100vh - 64px);flex:1}
.dashboard-layout.hidden{display:none}

/* === Sidebar === */
.sidebar{width:240px;background:var(--bg-secondary);border-right:1px solid var(--border);padding:1.5rem 0;flex-shrink:0}
.sidebar-header{padding:0 1.2rem 1.5rem;border-bottom:1px solid var(--border);text-align:left}
.sidebar-user-icon{font-size:1.5rem;margin-bottom:0.5rem}
.sidebar-header h3{font-size:1rem;font-weight:700;color:var(--text)}
.sidebar-header p{font-size:0.8rem;color:var(--text-muted)}
.sidebar-nav{padding:1rem 0}
.sidebar-link{display:flex;align-items:center;gap:10px;padding:10px 1.2rem;font-size:0.88rem;font-weight:500;color:var(--text-muted);transition:var(--transition);border-left:3px solid transparent}
.sidebar-link:hover{color:var(--primary);background:var(--primary-lighter)}
.sidebar-link.active{color:var(--primary);background:var(--primary-light);border-left-color:var(--primary);font-weight:600}

/* === Dashboard Main === */
.dashboard-main{flex:1;padding:2rem;overflow-y:auto}
.dashboard-section{display:none}
.dashboard-section.active{display:block;animation:fadeIn 0.3s ease}
.dash-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;flex-wrap:wrap;gap:12px}
.dash-header h1{font-size:1.5rem;font-weight:700}

/* === Forms === */
.form-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-bottom:1.5rem;box-shadow:var(--shadow-xs)}
.form-section h2{font-size:1.1rem;margin-bottom:1.2rem;display:flex;align-items:center;gap:10px;color:var(--text);font-weight:600}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-weight:500;font-size:0.85rem;color:var(--text-secondary)}
.form-group input,.form-group select{padding:11px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-family:inherit;font-size:0.9rem;transition:var(--transition);background:var(--bg-secondary);color:var(--text)}
.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,188,212,0.15);background:#fff}
.form-textarea{padding:11px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-family:inherit;font-size:0.9rem;resize:vertical;background:var(--bg-secondary);color:var(--text);transition:var(--transition)}
.form-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,188,212,0.15);background:#fff}

/* === Stats === */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:1.5rem}
.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.2rem;display:flex;align-items:center;gap:14px;transition:var(--transition)}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.stat-icon{width:44px;height:44px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.stat-icon.blue{background:var(--primary-light)}
.stat-icon.green{background:var(--success-bg)}
.stat-icon.orange{background:var(--warning-bg)}
.stat-icon.red{background:var(--danger-bg)}
.stat-info h3{font-size:1.4rem;font-weight:800;color:var(--text)}
.stat-info p{font-size:0.78rem;color:var(--text-muted);font-weight:500}
.stat-trend{font-size:0.72rem;font-weight:600}
.stat-trend.up{color:var(--success)}
.stat-trend.down{color:var(--danger)}

/* === Filter Buttons === */
.filter-buttons{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:1.5rem;justify-content:center}
.filter-btn{padding:7px 18px;border:1.5px solid var(--border);border-radius:20px;font-size:0.82rem;font-weight:500;cursor:pointer;background:#fff;color:var(--text-muted);transition:var(--transition);font-family:inherit}
.filter-btn:hover{border-color:var(--primary);color:var(--primary)}
.filter-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* === Doctor Cards === */
.doctors-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.doctor-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;transition:var(--transition);cursor:pointer}
.doctor-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:rgba(0,188,212,0.3)}
.doctor-card.selected{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,188,212,0.15)}
.doctor-avatar{width:48px;height:48px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;font-weight:700;margin-bottom:1rem}
.doctor-card h3{font-size:1rem;font-weight:600;margin-bottom:0.2rem}
.doctor-card .doctor-specialty{font-size:0.85rem;color:var(--text-muted);margin-bottom:0.5rem}
.doctor-meta{display:flex;gap:12px;font-size:0.8rem;color:var(--text-muted)}
.doctor-meta span{display:flex;align-items:center;gap:4px}

/* === Step Wizard === */
.step-wizard{display:flex;align-items:center;justify-content:center;gap:0;margin-bottom:2rem;padding:1.5rem 0}
.step{display:flex;align-items:center;gap:8px;font-size:0.88rem;font-weight:500;color:var(--text-muted)}
.step.active{color:var(--primary);font-weight:600}
.step.completed{color:var(--primary)}
.step-num{width:28px;height:28px;border-radius:50%;background:var(--border);display:flex;align-items:center;justify-content:center;font-size:0.78rem;font-weight:700;color:var(--text-muted)}
.step.active .step-num,.step.completed .step-num{background:var(--primary);color:#fff}
.step-line{width:60px;height:2px;background:var(--border);margin:0 8px}
.step-buttons{display:flex;gap:12px;margin-top:1.5rem}

/* === Time Slots === */
.time-slots{display:flex;flex-wrap:wrap;gap:8px}
.time-slot{padding:8px 18px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:0.85rem;font-weight:500;cursor:pointer;background:#fff;color:var(--text);transition:var(--transition);font-family:inherit}
.time-slot:hover{border-color:var(--primary);color:var(--primary)}
.time-slot.selected{background:var(--primary);color:#fff;border-color:var(--primary)}

/* === Confirm Details === */
.confirm-details{background:var(--bg-secondary);border-radius:var(--radius-sm);padding:1.2rem;margin-bottom:1rem}
.confirm-details p{font-size:0.9rem;margin-bottom:0.5rem;color:var(--text-secondary)}
.confirm-details strong{color:var(--text)}

/* === Reminders === */
.reminders-list .reminder-item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-sm);margin-bottom:8px}
.reminder-item p{font-size:0.88rem;color:var(--text-secondary)}
.reminder-badge{padding:4px 12px;border-radius:12px;font-size:0.72rem;font-weight:600;background:var(--primary-light);color:var(--primary-dark)}

/* === Appointments List === */
.appointments-list{margin-top:0.5rem}
.appointment-item{display:flex;align-items:center;justify-content:space-between;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-md);padding:1rem 1.2rem;margin-bottom:8px;transition:var(--transition);flex-wrap:wrap;gap:12px}
.appointment-item:hover{border-color:var(--border);box-shadow:var(--shadow)}
.appt-details{display:flex;align-items:center;gap:12px;flex:1;min-width:0}
.appt-icon{width:40px;height:40px;border-radius:10px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}
.appt-text h4{font-size:0.9rem;font-weight:600;color:var(--text)}
.appt-text p{font-size:0.8rem;color:var(--text-muted)}
.no-appointments{text-align:center;padding:3rem;color:var(--text-muted)}
.no-appointments .empty-icon{font-size:2.5rem;margin-bottom:0.8rem;opacity:0.3}
.no-appointments h3{font-size:1rem;font-weight:600;color:var(--text-secondary);margin-bottom:0.3rem}

/* === Charts === */
.charts-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:1.5rem}
.chart-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow-xs)}
.chart-section h2{font-size:1.05rem;margin-bottom:1.2rem;font-weight:600}
.chart-bars{display:flex;align-items:flex-end;gap:20px;height:180px;padding:0 1rem}
.chart-bar-wrapper{flex:1;display:flex;flex-direction:column;align-items:center;height:100%;justify-content:flex-end}
.chart-bar{width:100%;max-width:56px;border-radius:8px 8px 0 0;transition:height 0.8s cubic-bezier(0.4,0,0.2,1);position:relative}
.chart-bar .bar-value{position:absolute;top:-22px;left:50%;transform:translateX(-50%);font-size:0.78rem;font-weight:700;color:var(--text)}
.chart-bar-label{margin-top:8px;font-size:0.72rem;color:var(--text-muted);font-weight:500;text-align:center}
.dept-chart{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;padding:1rem 0}
.dept-item{display:flex;align-items:center;gap:8px;padding:8px 16px;background:var(--bg-secondary);border-radius:var(--radius-sm);font-size:0.85rem;font-weight:500}
.dept-color{width:12px;height:12px;border-radius:3px}

/* === Admin Login === */
.admin-login-overlay{position:fixed;inset:0;background:linear-gradient(180deg,var(--primary-lighter) 0%,#fff 100%);z-index:900;display:flex;align-items:center;justify-content:center;padding:2rem}
.admin-login-overlay.hidden{display:none}
.admin-login-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:2.5rem;width:100%;max-width:420px;box-shadow:var(--shadow-xl);text-align:center;animation:fadeInUp 0.6s ease-out}
.admin-login-card .login-icon{width:64px;height:64px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;font-size:1.8rem;color:#fff;box-shadow:var(--shadow-primary)}
.admin-login-card h2{font-size:1.4rem;font-weight:700;margin-bottom:0.4rem}
.admin-login-card .subtitle{font-size:0.88rem;color:var(--text-muted);margin-bottom:2rem}
.admin-login-card .form-group{text-align:left;margin-bottom:1rem}
.admin-login-card .form-group input{width:100%}
.admin-login-card .error-msg{color:var(--danger);font-size:0.82rem;font-weight:500;margin-top:1rem;display:none}
.credentials-hint{margin-top:1.5rem;padding:12px;background:var(--primary-lighter);border:1px solid rgba(0,188,212,0.1);border-radius:var(--radius-sm);font-size:0.8rem;color:var(--text-muted)}
.credentials-hint strong{color:var(--primary)}

/* === Booking Step === */
.booking-step{display:none}
.booking-step.active{display:block;animation:fadeIn 0.3s ease}

/* === Footer === */
.footer{background:var(--bg-secondary);border-top:1px solid var(--border);color:var(--text-muted);padding:3rem 2rem 1.5rem;margin-top:auto}
.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;margin-bottom:2rem}
.footer-section h4{color:var(--text);font-size:0.95rem;font-weight:600;margin-bottom:1rem}
.footer-section p,.footer-section a{font-size:0.85rem;line-height:2;color:var(--text-muted);transition:var(--transition)}
.footer-section a:hover{color:var(--primary)}
.footer-bottom{max-width:1200px;margin:0 auto;text-align:center;padding-top:1.5rem;border-top:1px solid var(--border);font-size:0.8rem;color:var(--text-light)}

/* === Toast === */
.toast-container{position:fixed;top:80px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:8px}
.toast{padding:12px 20px;border-radius:var(--radius-md);color:#fff;font-weight:500;font-size:0.88rem;animation:slideIn 0.3s ease,fadeOut 0.3s ease 2.7s forwards;box-shadow:var(--shadow-lg)}
.toast.success{background:var(--success)}
.toast.error{background:var(--danger)}
.toast.info{background:var(--primary)}

/* === Animations === */
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}
@keyframes fadeOut{to{opacity:0;transform:translateY(-10px)}}

/* === Responsive === */
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:1rem;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg)}
  .nav-links.open{display:flex}
  .hamburger{display:flex}
  .hero h1{font-size:2rem}
  .hero{padding:3rem 1.5rem}
  .hero-stats{gap:1.5rem}
  .hero-stat h3{font-size:1.4rem}
  .dashboard-layout{flex-direction:column}
  .sidebar{width:100%;border-right:none;border-bottom:1px solid var(--border);padding:1rem 0}
  .sidebar-nav{display:flex;overflow-x:auto;gap:0;padding:0.5rem 1rem}
  .sidebar-link{white-space:nowrap;border-left:none!important;border-bottom:2px solid transparent;padding:8px 14px}
  .sidebar-link.active{border-bottom-color:var(--primary);border-left-color:transparent!important}
  .sidebar-header{display:none}
  .dashboard-main{padding:1.5rem 1rem}
  .stats-grid{grid-template-columns:1fr 1fr}
  .charts-row{grid-template-columns:1fr}
  .page-container{padding:1.5rem 1rem}
  .doctors-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .stats-grid{grid-template-columns:1fr}
  .hero h1{font-size:1.7rem}
  .hero-stats{flex-direction:column;gap:1rem}
}