/* ========================================
   FLAVOR-AWARE MACRO CHEF - SHARED STYLES
   ======================================== */

:root {
    --primary: #2d6a4f;
    --primary-light: #40916c;
    --primary-dark: #1b4332;
    --accent: #d8f3dc;
    --accent-warm: #fefae0;
    --accent-orange: #f4a261;
    --text-dark: #1a1a2e;
    --text-muted: #6c757d;
    --bg-light: #f8faf9;
    --bg-white: #ffffff;
    --card-shadow: 0 4px 20px rgba(45, 106, 79, 0.08);
    --card-shadow-hover: 0 8px 30px rgba(45, 106, 79, 0.15);
    --border-radius: 16px;
    --border-radius-sm: 10px;
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
}

body { 
    background-color: var(--bg-light); 
    font-family: 'DM Sans', sans-serif;
    color: var(--text-dark);
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

h1, h2, h3, h4, h5 {
    font-family: 'Fraunces', serif;
    margin: 0;
}

/* ========================================
   NAVIGATION
   ======================================== */

.top-nav {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    padding: 16px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    color: white;
    font-family: 'Fraunces', serif;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-brand:hover {
    color: var(--accent);
}

.nav-steps {
    display: flex;
    gap: 8px;
}

.nav-step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: default;
}

.nav-step.inactive {
    background-color: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.6);
}

.nav-step.active {
    background-color: white;
    color: var(--primary-dark);
}

.nav-step.completed {
    background-color: var(--accent);
    color: var(--primary-dark);
    cursor: pointer;
}

.nav-step.completed:hover {
    background-color: white;
}

.step-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
}

.nav-step.inactive .step-number {
    background-color: rgba(255,255,255,0.2);
}

.nav-step.active .step-number,
.nav-step.completed .step-number {
    background-color: var(--primary);
    color: white;
}

/* ========================================
   PAGE CONTAINER
   ======================================== */

.page-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.page-header {
    text-align: center;
    margin-bottom: 40px;
}

.page-title {
    font-size: 2.5rem;
    color: var(--primary-dark);
    margin-bottom: 10px;
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   CARDS
   ======================================== */

.card { 
    background: var(--bg-white);
    box-shadow: var(--card-shadow); 
    border: none; 
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--card-shadow-hover);
}

.card-body {
    padding: 24px;
}

/* ========================================
   FORMS
   ======================================== */

.form-label {
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 6px;
    display: block;
}

.form-control, .form-select {
    border-radius: var(--border-radius-sm);
    border: 1px solid #dee2e6;
    padding: 10px 14px;
    transition: var(--transition);
    width: 100%;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 0.2rem rgba(45, 106, 79, 0.15);
    outline: none;
}

.input-group-title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary-dark);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-light);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    padding: 12px 24px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline-primary:hover {
    background-color: var(--primary);
    color: white;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-light {
    background-color: white;
    color: var(--primary-dark);
}

.btn-light:hover {
    background-color: var(--accent);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* ========================================
   LOADER
   ======================================== */

.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.95);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loader-overlay.show {
    display: flex;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--accent);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loader-text {
    margin-top: 20px;
    font-size: 1.2rem;
    color: var(--primary-dark);
    font-weight: 500;
}

.loader-subtext {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 8px;
}

/* ========================================
   CALORIE DISPLAY
   ======================================== */

.calorie-display {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: center;
    color: white;
}

.calorie-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 4px;
}

.calorie-value {
    font-family: 'Fraunces', serif;
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.calorie-unit {
    font-size: 1rem;
    opacity: 0.8;
    margin-top: 4px;
}

/* ========================================
   UNIT TOGGLE
   ======================================== */

.unit-toggle {
    display: inline-flex;
    background-color: #e9ecef;
    border-radius: 25px;
    padding: 4px;
}

.unit-btn {
    padding: 8px 20px;
    border: none;
    background: none;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-muted);
}

.unit-btn.active {
    background-color: white;
    color: var(--primary-dark);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* ========================================
   EMPTY STATE
   ======================================== */

.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.empty-state-title {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.empty-state-text {
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* ========================================
   BADGES
   ======================================== */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-primary {
    background-color: var(--accent);
    color: var(--primary-dark);
}

.badge-outline {
    background-color: white;
    color: var(--primary);
    border: 1px solid var(--primary-light);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
    .nav-steps {
        display: none;
    }

    .page-title {
        font-size: 1.8rem;
    }

    .calorie-value {
        font-size: 2.5rem;
    }

    .page-container {
        padding: 20px 16px;
    }

    /* Mobile button sizing */
    .btn {
        padding: 12px 18px;
        font-size: 0.95rem;
        width: 100%;
        justify-content: center;
    }

    .btn-lg {
        padding: 14px 24px;
        font-size: 1rem;
    }

    .btn-sm {
        padding: 10px 14px;
        font-size: 0.85rem;
    }
}

/* Small mobile devices */
@media (max-width: 480px) {
    .page-title {
        font-size: 1.5rem;
    }

    .page-subtitle {
        font-size: 1rem;
    }

    .calorie-value {
        font-size: 2rem;
    }

    .calorie-display {
        padding: 18px;
    }

    .card-body {
        padding: 16px;
    }

    /* Ensure buttons never overflow */
    .btn {
        max-width: 100%;
        white-space: normal;
        text-align: center;
        min-height: 44px; /* Touch-friendly minimum */
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
    .no-print { 
        display: none !important; 
    }
    
    .top-nav {
        position: static;
        background: var(--primary) !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    body {
        background: white;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}