/* VARIABILI COLORE ISPIRATE A COSIMOSGOBBA.IT */
:root {
    --primary-orange: #ff6b35;      /* Arancione principale */
    --orange-hover: #e85a28;        /* Arancione scuro hover */
    --dark-text: #2c3e50;           /* Testo principale */
    --light-text: #7f8c8d;          /* Testo secondario */
    --bg-color: #f8f9fa;            /* Sfondo chiaro */
    --card-bg: #ffffff;             /* Sfondo card */
    --border-color: #dee2e6;        /* Bordi */
    --success-color: #27ae60;       /* Verde successo */
    --error-color: #e74c3c;         /* Rosso errore */
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    color: var(--dark-text);
    padding: 20px;
    line-height: 1.6;
}

.main-container {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

/* HEADER */
.header {
    background: linear-gradient(135deg, var(--primary-orange) 0%, #ff8c42 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

.header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.header p {
    font-size: 1rem;
    opacity: 0.95;
}

/* FORM */
.sleep-form {
    padding: 40px 30px;
}

.form-group {
    margin-bottom: 28px;
}

.form-group label {
    display: block;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--dark-text);
    margin-bottom: 8px;
    line-height: 1.5;
}

.required {
    color: var(--primary-orange);
    font-weight: bold;
}

/* INPUT STYLES */
input[type="text"],
input[type="tel"],
input[type="time"],
select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    background-color: #fafbfc;
    transition: all 0.3s ease;
    font-family: inherit;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--primary-orange);
    background-color: white;
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

input::placeholder {
    color: #adb5bd;
}

/* SELECT STYLING */
select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
    padding-right: 40px;
}

/* BOTTONI */
.btn-primary {
    width: 100%;
    background-color: var(--primary-orange);
    color: white;
    border: none;
    padding: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 20px;
}

.btn-primary:hover {
    background-color: var(--orange-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.btn-primary:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--primary-orange);
    color: var(--primary-orange);
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
}

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

/* MESSAGGI */
.error-msg {
    color: var(--error-color);
    font-size: 0.9rem;
    text-align: center;
    margin-top: 10px;
    padding: 10px;
    background-color: #fee;
    border-radius: 4px;
}

.hidden {
    display: none !important;
}

/* SUCCESS VIEW */
.success-view {
    padding: 60px 30px;
    text-align: center;
}

.success-icon {
    width: 80px;
    height: 80px;
    background-color: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 0 auto 20px;
}

.success-view h2 {
    color: var(--dark-text);
    margin-bottom: 10px;
}

.success-view p {
    color: var(--light-text);
    margin-bottom: 30px;
}

/* RESPONSIVE */
@media (max-width: 600px) {
    body {
        padding: 0;
    }

    .main-container {
        border-radius: 0;
        box-shadow: none;
    }

    .header {
        padding: 30px 20px;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    .sleep-form {
        padding: 30px 20px;
    }

    .form-group label {
        font-size: 0.9rem;
    }
}

/* STILE SPECIALE PER INPUT DURATA */
.duration-input {
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
    font-size: 1.1rem;
    text-align: center;
}