/* Osnovni stilovi za Apple-like dizajn */
:root {
    --primary-color: #007aff; /* Apple Blue */
    --secondary-color: #8e8e93; /* Apple Gray */
    --background-color: #f5f5f7; /* Light Gray for background */
    --card-background: #ffffff; /* Pure White for cards and containers */
    --text-color: #1d1d1f; /* Dark text for readability */
    --light-text: #6e6e73; /* Lighter text for secondary info */
    --border-color: #d2d2d7; /* Subtle border color */
    --shadow-color: rgba(0, 0, 0, 0.08); /* Soft shadow */
    --input-background: #fcfcfc;
}

/* Globalni stilovi */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.header-container, .form-container, .footer-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--card-background);
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 3px var(--shadow-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
}

.logo .logo-blue {
    color: var(--primary-color);
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    font-size: 1.1rem;
    transition: color 0.2s ease-in-out;
}

nav a:hover {
    color: var(--primary-color);
}

/* Main Content & Form */
main {
    flex-grow: 1;
    padding: 4rem 0;
}

.form-container {
    background: var(--card-background);
    border-radius: 12px;
    padding: 4rem;
    box-shadow: 0 4px 12px var(--shadow-color);
    max-width: 700px;
    margin: 0 auto;
}

.form-container h1 {
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.form-intro {
    text-align: center;
    color: var(--light-text);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.form-section {
    background: var(--background-color);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.form-section h3 {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--primary-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-weight: 500;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background-color: var(--input-background);
    color: var(--text-color);
    box-sizing: border-box;
    transition: border-color 0.2s ease-in-out;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.2);
}

select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url('data:image/svg+xml;utf8,<svg fill="none" viewBox="0 0 24 24" stroke="currentColor" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7"></path></svg>');
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 30px;
}

.terms-checkbox {
    display: flex;
    align-items: center;
    margin-top: 2rem;
}

.terms-checkbox input[type="checkbox"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    height: 20px;
    width: 20px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    margin-right: 10px;
    position: relative;
    top: 2px;
    transition: background-color 0.2s, border-color 0.2s;
}

.terms-checkbox input[type="checkbox"]:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.terms-checkbox input[type="checkbox"]:checked:before {
    content: '✓';
    color: white;
    font-size: 14px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.terms-checkbox label a {
    color: var(--primary-color);
    text-decoration: none;
}

.submit-button {
    width: 100%;
    padding: 15px;
    background-color: var(--primary-color);
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    margin-top: 2rem;
    transition: background-color 0.2s ease-in-out;
}

.submit-button:hover {
    background-color: #005bb5;
}

/* Footer */
footer {
    background: var(--text-color);
    color: #ffffff;
    padding: 2rem 0;
    text-align: center;
}

footer .footer-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

footer p {
    margin: 0;
    color: #adb5bd;
}

footer .links a {
    color: #ffffff;
    text-decoration: none;
    margin: 0 1rem;
    transition: color 0.2s;
}

footer .links a:hover {
    color: var(--primary-color);
}

/* NOVI KOD: Stilovi za štampu */
@media print {
    body {
        background-color: #fff;
    }
    header, footer {
        display: none;
    }
    main {
        padding: 0;
    }
    .invoice-box {
        box-shadow: none;
        border: none;
        max-width: 100%;
        padding: 0;
    }
}