/* Design System - Color Variables and Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
    --fa-style-family-classic: "Font Awesome 6 Free";
    --fa-font-solid: normal 900 1em / 1 "Font Awesome 6 Free";
    --fa-font-regular: normal 400 1em / 1 "Font Awesome 6 Free";
    --fa-style-family-brands: "Font Awesome 6 Brands";
    --fa-font-brands: normal 400 1em / 1 "Font Awesome 6 Brands";
    
    /* Color Palette */
    --greywhite: #E7ECEF;
    --darkerblue: #274C77;
    --lighterblue: #6096BA;
    --skyblue: #A3CEF1;
    --browngrey: #8B8C89;
    --blackblueish: #34495e;
    --dark: #373349;
    --shadow: rgba(0, 0, 0, .2);
    
    /* Font */
    --font-family: 'Tonnelier', 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    overflow-y: scroll; /* Always reserve space for scrollbar to prevent layout shift */
}

body {
    font-family: var(--font-family);
    background: var(--greywhite);
    min-height: 100vh;
    color: var(--dark);
}

/* Common button styles */
.btn-primary {
    background: var(--darkerblue);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 12px 24px;
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    background: var(--lighterblue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow);
}

.btn-secondary {
    background-color: var(--greywhite);
    color: var(--darkerblue);
    border: 2px solid var(--lighterblue);
    border-radius: 8px;
    padding: 10px 20px;
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-secondary:hover {
    background-color: var(--skyblue);
}

/* Common container styles */
.container {
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px var(--shadow);
}

/* Common input styles */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
    font-family: var(--font-family);
    border: 2px solid var(--greywhite);
    border-radius: 8px;
    transition: border-color 0.3s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--lighterblue);
}

/* Common link styles */
a {
    color: var(--lighterblue);
    text-decoration: none;
    font-weight: 600;
}

a:hover {
    color: var(--darkerblue);
    text-decoration: underline;
}

/* Error and success messages */
.error-message {
    background-color: #fee;
    color: #c33;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: none;
}

.error-message.show {
    display: block;
}

.success-message {
    background-color: #efe;
    color: #3c3;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: none;
}

.success-message.show {
    display: block;
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 20px !important;
        margin: 10px auto;
    }

    /* Header adjustments */
    .header {
        flex-direction: column;
        gap: 15px;
        padding: 15px 20px !important;
        text-align: center;
    }

    .header h1 {
        font-size: 1.2rem !important;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }

    .nav-links a {
        padding: 6px 12px;
        font-size: 0.9rem;
    }

    /* Session info */
    .session-info {
        padding: 12px 15px !important;
        font-size: 0.85rem;
        text-align: center;
    }

    /* Form adjustments */
    .form-group {
        margin-bottom: 15px;
    }

    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="number"],
    input[type="date"],
    select,
    textarea {
        width: 100%;
        padding: 12px;
        font-size: 16px; /* Prevents zoom on iOS */
    }

    /* Buttons */
    .btn-primary,
    .submit-btn {
        width: 100%;
        padding: 14px;
        font-size: 1rem;
        margin-bottom: 10px;
    }

    /* Grid adjustments */
    .date-filters {
        flex-direction: column;
        gap: 15px;
    }

    /* Issue cards */
    .issue {
        padding: 15px !important;
        margin-bottom: 15px;
    }

    .issue h3 {
        font-size: 1.1rem;
    }

    /* Tables and lists */
    table {
        font-size: 0.85rem;
        display: block;
        overflow-x: auto;
    }

    /* Make grids stack on mobile */
    .effort-grid,
    .metrics-grid,
    .median-grid {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 480px) {
    body {
        padding: 5px;
    }

    .container {
        padding: 15px !important;
        border-radius: 8px;
    }

    .header {
        padding: 12px 15px !important;
    }

    .header h1 {
        font-size: 1rem !important;
    }

    .nav-links {
        flex-direction: column;
        width: 100%;
    }

    .nav-links a {
        width: 100%;
        text-align: center;
    }

    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="number"],
    input[type="date"],
    select,
    textarea {
        padding: 10px;
        font-size: 16px;
    }

    .btn-primary,
    .submit-btn {
        padding: 12px;
        font-size: 0.95rem;
    }
}