:root {
    /* Palette dei colori condivisa */
    --color-primary: #4D7298;     /* Blu scuro */
    --color-secondary: #77A6B6;   /* Blu medio */
    --color-accent: #9DC3C2;      /* Verde acqua */
    --color-light: #B3D89C;       /* Verde chiaro */
    --color-lighter: #D0EFB1;     /* Verde molto chiaro */
    --color-text: #333333;        /* Grigio scuro per il testo */
    --color-bg: #ffffff;          /* Bianco sfondo */
    --color-border: #9DC3C2;      /* Verde acqua per i bordi */
}

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--color-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.container {
    background: var(--color-bg);
    padding: 40px;
    width: 100%;
    max-width: 800px; /* Larghezza maggiore come nella pagina di sign up */
    margin: 0 auto;
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 26px;
    color: #000000; /* Nero, come i titoli del footer */
    font-weight: 600;
}

form {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 500px; /* Centrato nel container più largo */
    margin: 0 auto;
}

label {
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--color-text);
    font-weight: 600;
}

input[type="text"],
input[type="password"] {
    padding: 14px;
    margin-bottom: 20px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s;
    background-color: #f8fcf4; /* Sfondo input leggermente colorato */
}

input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(77, 114, 152, 0.1);
    outline: none;
}

input::placeholder {
    color: #aaaaaa;
}

.btn {
    background-color: var(--color-primary);
    color: white;
    padding: 14px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.2s;
    margin-top: 10px;
}

.btn:hover {
    background-color: #40617f; /* Versione più scura del primary */
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

.login-link {
    text-align: center;
    margin-top: 25px;
    font-size: 14px;
    color: var(--color-text);
}

.login-link a {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-color: #000000; /* Sottolineatura nera, come nei link del footer */
    font-weight: 600;
    transition: color 0.2s;
}

.login-link a:hover {
    color: var(--color-secondary);
}

/* Aggiunta di un separatore sopra login-link, simile al footer */
.login-link:before {
    content: "";
    display: block;
    height: 1px;
    background-color: var(--color-accent);
    margin: 0 auto 20px;
    width: 80%;
}

/* =============================================
   RESPONSIVE — non toccare nulla sopra
   ============================================= */

/* --- Tablet (768px–1024px) --- */
@media (min-width: 768px) and (max-width: 1024px) {

  .container {
    padding: 32px 28px;
    max-width: 640px;
  }

  h1 {
    font-size: 24px;
    margin-bottom: 24px;
  }

  form {
    max-width: 420px;
  }

  input[type="text"],
  input[type="password"] {
    padding: 13px;
    font-size: 14px;
  }

  .btn {
    padding: 13px;
    font-size: 15px;
  }

  .login-link {
    font-size: 13px;
    margin-top: 20px;
  }
}

/* --- Mobile (fino a 767px) --- */
@media (max-width: 767px) {

  body {
    padding: 12px;
    justify-content: flex-start;  /* evita che il form flotti a metà schermo con la tastiera aperta */
    padding-top: 24px;
  }

  .container {
    padding: 24px 16px;
    max-width: 100%;
    width: 100%;
  }

  h1 {
    font-size: 20px;
    margin-bottom: 20px;
  }

  form {
    max-width: 100%;   /* form a piena larghezza su mobile */
  }

  label {
    font-size: 13px;
  }

  input[type="text"],
  input[type="password"] {
    padding: 13px 12px;
    font-size: 15px;   /* 15px evita lo zoom automatico di iOS su focus */
    margin-bottom: 16px;
    border-radius: 6px;
  }

  .btn {
    padding: 14px;
    font-size: 15px;
    border-radius: 6px;
    margin-top: 6px;
  }

  .login-link {
    font-size: 13px;
    margin-top: 20px;
  }

  .login-link:before {
    width: 100%;
    margin-bottom: 16px;
  }

  /* Flash messages */
  .flash-success,
  .flash-error {
    font-size: 13px;
    padding: 9px 10px;
  }
}

/* --- Mobile piccolo (iPhone SE, fino a 380px) --- */
@media (max-width: 380px) {

  body {
    padding: 8px;
    padding-top: 16px;
  }

  .container {
    padding: 20px 12px;
  }

  h1 {
    font-size: 18px;
  }

  input[type="text"],
  input[type="password"] {
    padding: 11px 10px;
    font-size: 15px;  /* mai sotto i 15px su mobile per evitare lo zoom iOS */
  }

  .btn {
    padding: 13px;
    font-size: 14px;
  }

  .login-link {
    font-size: 12px;
  }
}


.flash { margin: 12px 0; }
.flash-success { background:#e7f8ee; color:#1d7a3a; border:1px solid #bfe9cd; padding:10px 12px; border-radius:6px; }
.flash-error { background:#fdeceb; color:#8e2a1e; border:1px solid #f5b5b0; padding:10px 12px; border-radius:6px; }